#### Volume 6, issue 3 (2006)

 1 A Alexeevski, S Natanzon, Noncommutative two-dimensional field theories and Hurwitz numbers for real algebraic curves arXiv:math.GT/0202164 2 M M Asaeda, J H Przytycki, A S Sikora, Categorification of the Kauffman bracket skein module of $I$-bundles over surfaces, Algebr. Geom. Topol. 4 (2004) 1177 MR2113902 3 M Atiyah, Topological quantum field theories, Inst. Hautes Études Sci. Publ. Math. (1988) MR1001453 4 D Bar-Natan, On Khovanov's categorification of the Jones polynomial, Algebr. Geom. Topol. 2 (2002) 337 MR1917056 5 D Bar-Natan, Khovanov's homology for tangles and cobordisms, Geom. Topol. 9 (2005) 1443 MR2174270 6 R Fenn, L Kauffman, V Manturov, Virtual Knot Theory - Unsolved Problems arXiv:math.GT/0405428 7 M Jacobsson, An invariant of link cobordisms from Khovanov homology, Algebr. Geom. Topol. 4 (2004) 1211 MR2113903 8 L Kauffman, V Manturov, Virtual Knots and Links arXiv:math.GT/0502014 9 M Khovanov, A categorification of the Jones polynomial, Duke Math. J. 101 (2000) 359 MR1740682 10 M Khovanov, Link homology and Frobenius extensions, Fund. Math. 190 (2006) 179 11 M Mackaay, P Turner, P Vaz, A remark on Rasmussen's invariant of knots arXiv:math.GT/0509692 12 V Manturov, The Khovanov complex for virtual links arXiv:math.GT/0501317 13 V G Turaev, Quantum invariants of knots and 3-manifolds, de Gruyter Studies in Mathematics 18, Walter de Gruyter & Co. (1994) MR1292673 14 P Turner, Calculating Bar-Natan's characteristic two Khovanov homology arXiv:math.GT/0411225