Article:Math.QA/9903003/unidentified-references

  

 J.~Baez. \newblock Higher-dimensional algebra {II}: 2-{H}ilbert spaces. \newblock {\em Adv. Math.}, 127:125--189, 1997.  

 J.~Baez. \newblock An introduction to {$n$}-categories. \newblock In E.~Moggi and G.~Rosolini, editors, {\em 7th {C}onference on   {C}ategory {T}heory and {C}omputer {S}cience}, volume 1290 of {\em Lecture   Notes in Computer Science}, Berlin, 1997. Springer-Verlag.  

 J.~Baez and J.~Dolan. \newblock Higher-dimensional algebra and topological quantum field theory. \newblock {\em J. of Math. Phys.}, 36:6073--6105, 1995.  

 J.~Baez and J.~Dolan. \newblock Categorification. \newblock In E.~Getzler and M.~Kapranov, editors, {\em Higher Category Theory},   pages 1--36, Providence, 1998. {A}{M}{S}.  

 J.~Baez and J.~Dolan. \newblock Higher-dimensional algebra {III}: {$n$}-{C}ategories and the algebra   of opetopes. \newblock {\em Adv. Math.}, 135:145--206, 1998.  

 J.~Baez and L.~Langford. \newblock Higher-dimensional algebra {IV}: {$2$}-{T}angles. \newblock preprint available as math.QA/981139.  

 J.~Baez and L.~Langford. \newblock 2-tangles. \newblock {\em Lett. Math. Phys.}, 43:187--197, 1998.  

 J.~Baez and M.~Neuchl. \newblock Higher-dimensional algebra {I}: Braided monoidal 2-categories. \newblock {\em Adv. Math.}, 121:196--244, 1996.  

 C.~Balteany, Z.~Fiedorowicz, R.~Schw{\"a}nzl, and R.~Vogt. \newblock Iterated monoidal categories. \newblock preprint 1998.  

 J.~W. Barrett and B.~W. Westbury. \newblock The equality of 3-manifold invariants. \newblock {\em Math. Proc. Camb. Phil. Soc.}, 118:503--510, 1995.  

 J.~W. Barrett and B.~W. Westbury. \newblock Invariants of piecewise-linear 3-manifolds. \newblock {\em Trans. Amer. Math. Soc.}, 348(10):3997--4022, 1996.  

 M.~Batanin. \newblock Monoidal globular categories as a natural environment for the theory   of weak {$n$}-categories. \newblock to appear in Adv. Math.  

 J.~B{\'e}nabou. \newblock {\em Introduction to Bicategories}, volume~47 of {\em Lecture Notes   in Mathematics}, pages 1--77. \newblock Springer-{V}erlag, Berlin, 1967.  

 D.~Birmingham and M.~Rakowski. \newblock Discrete quantum field theories and the intersection form. \newblock {\em Mod. Phys. Lett.}, {A}9:2265--2271, 1994.  

 D.~Birmingham and M.~Rakowski. \newblock State sum models and simplicial cohomology. \newblock {\em Comm. Math. Phys.}, 173:135--, 1995.  

 D.~Birmingham and M.~Rakowski. \newblock On {D}ijkgraaf-{W}itten type invariants. \newblock {\em Lett. Math. Phys.}, 37:363--374, 1996.  

 G.~E. Bredon. \newblock {\em Topology and Geometry}. \newblock Number 139 in Graduate Texts in Mathematics. Springer, 1993.  

 R.~Brown. \newblock Computing homotopy types using crossed {$n$}-cubes of groups. \newblock In N.~Ray and G.~Walker, editors, {\em Proc. Adams Memorial Symposium   on Algebraic Topology, {M}anchester 1990}, volume~I, of {\em London Math.   Soc. Lecture Note Series 175}, pages 187--210. Cambridge University Press,   1991.  

 R.~Brown. \newblock Groupoids and crossed objects in algebraic topology. \newblock {\em Homology, Homotopy and Applications}, 1:1--78, 1999.  

 J.~S. Carter, L.~H. Kauffman, and M.~Saito. \newblock Diagrammatics, singularities, and their algebraic interpretations. \newblock In {\em 10th Brazilian Topology Meeting, S{\~a}o Carlos, July, 1996},   volume~13 of {\em Matem{\'a}tica Contempor{\'a}nea}. Sociedade Brasileira de   Matem{\'a}tica, 1997.  

 J.~S. Carter, L.~H. Kauffman, and M.~Saito. \newblock Structures and diagrammatics of four dimensional topological lattice   field theories. \newblock {\em Adv. Math.}, 146:39--100, 1999.  

 S.~Chung, M.~Fukuma, and A.~Shapere. \newblock The structure of topological field theories in three dimensions. \newblock {\em Int. J. Mod. Phys.}, A9:1305--1360, 1994.  

 L.~Crane and I.~Frenkel. \newblock Four dimensional topological quantum field theory, hopf categories,   and the canonical bases. \newblock {\em J. Math. Phys.}, 35:5136--5154, 1994.  

 L.~Crane, L.~H. Kauffman, and D.~N. Yetter. \newblock State-sum invariants of 4-manifolds. \newblock {\em {J}{K}{T}{R}}, 6(2):177--234, 1997.  

 L.~Crane and D.~N. Yetter. \newblock A categorical construction of 4d topological quantum field theories. \newblock In L.~H. Kauffman and R.~A. Baadhio, editors, {\em Quantum Topology},   pages 131--138. World Scientific Press, 1993.  

 L.~Crane and D.~N. Yetter. \newblock Deformations of (bi)tensor categories. \newblock {\em Cah. Top. Geom. Diff. Cat.}, V XXXIX(3):163, 1998.  

 L.~Crane and D.~N. Yetter. \newblock Examples of categorification. \newblock {\em Cah. Top. Geom. Diff. Cat.}, V XXXIX(1):3, 1998.  

 S.~Crans. \newblock Generalized centers of braided and sylleptic monoidal 2-categories. \newblock {\em Adv. Math.}, 136(2):183--223, 1998.  

 R.~Dijkgraaf and E.~Witten. \newblock Topological gauge theories and group cohomology. \newblock {\em Comm. Math. Phys.}, 129(2):393--429, 1990.  

 Z.~Fiedorowicz. \newblock The symmetric bar construction. \newblock preprint.  

 D.~S. Freed and F.~Quinn. \newblock {C}hern-{S}imons theory with finite gauge group. \newblock {\em Comm. Math. Phys.}, 156:435--472, 1993.  

 M.~Fukuma, S.~Hosono, and H.~Kawai. \newblock Lattice topological field theory in two dimensions. \newblock {\em Comm. Math. Phys.}, 161:157--176, 1994.  

 R.~Gordon, A.~Powers, and R.~Street. \newblock Coherence for tricategories. \newblock {\em Memoirs of the {A}{M}{S}}, 117(558):1--81, 1995.  

 A.~Grothendieck. \newblock Pursuing stacks. \newblock unpublished manuscript, distributed from {U}{C}{N}{W}, Bangor, United   Kingdom, 1983.  

 M.~M. Kapranov and V.~A. Voevodsky. \newblock 2-{C}ategories and {Z}amolodchikov tetrahedra equations. \newblock In {\em Proc. Symp. Pure Math.}, volume 56, Part 2, pages 177--260.   AMS, Providence, 1994.  

 G.~Kuperberg. \newblock Involutory {H}opf algebras and 3-manifolds invariants. \newblock {\em Int. J. Math.}, 2(1):41--66, 1991.  

 M.~A. Mackaay. \newblock Spherical 2-categories and 4-manifold invariants. \newblock {\em Adv. Math.}, 143:288--348, 1999.  

 S.~MacLane and P.~Pare. \newblock Coherence in bicategories and indexed categories. \newblock {\em J. Pure Appl. Algebra}, 37:59--80, 1985.  

 M.~Neuchl. \newblock {\em Representation Theory of {H}opf Categories}. \newblock PhD thesis, University of {M}unich, 1997.  

 T.~Porter. \newblock {T}{Q}{F}{T}'s from homotopy $n$-types. \newblock {\em J. London. Math. Soc.}, 58(2):723--732, 1998.  

 F.~Quinn. \newblock Group categories and their field theories. \newblock to appear in Geometry and Topology, prepint available as   {G}{T}/9811047.  

 F.~Quinn. \newblock {\em Lectures on Axiomatic Topological Quantum Field Theory},   volume~1 of {\em {I}{A}{S}/{P}ark {C}ity {M}ath. {S}eries}, pages 325--453. \newblock {A}{M}{S}, 1995.  

 C.~P. Rourke and B.~J. Sanderson. \newblock {\em Introduction to Piece-Wise Linear Topology}. \newblock Springer-Verlag, Berlin-Heidelberg-New York, 1982.  

 Z.~Tamsamani. \newblock {\em Sur des Notions de {$n$}-Categorie et {$n$}-Groupo{\"\i}de   Non-Strictes Via des Ensembles Multi-Simpliciaux}. \newblock PhD thesis, Lab. de Top. Geom., Univ. P. Sabatier, Toulouse, 1995.  

 Z.~Tamsamani. \newblock Sur des notions de n-categorie et n-groupoide non-strictes via des   ensembles multi-simpliciaux. \newblock {\em K-Theory}, 16(1):51--99, 1999.  

 V.~G. Turaev. \newblock {\em Quantum Invariants of Knots and 3-Manifolds}. \newblock De Gruyter, New York-Berlin, 1994.  

 V.~G. Turaev and O.~Y. Viro. \newblock State-sum invariants of 3-manifolds and quantum {$6j$}-symbols. \newblock {\em Topology}, 31(4):865--902, 1992.  

 G.~W. Whitehead. \newblock {\em Elements of Homotopy Theory}, volume~61 of {\em Graduate Texts   in Mathematics}. \newblock Springer-{V}erlag, 1978.  

 D.~N. Yetter. \newblock {T}{Q}{F}{T}'s from homotopy 2-types. \newblock {\em {J}{K}{T}{R}}, 2(1):113--123, 1993.  

 D.~N. Yetter. \newblock State-sum invariants of 3-manifolds associated to artinian semisimple   tortile categories. \newblock {\em Topology and Appl.}, 58(1):47--80, 1994.