Skein theory for S U ( n ) -quantum invariants. Sikora, Adam S. — 2005 Algebraic & Geometric Topology
Categorification of the Kauffman bracket skein module of I -bundles over surfaces. Asaeda, Marta M.; Przytycki, Jozef H.; Sikora, Adam S. — 2004 Algebraic & Geometric Topology