1. Algebraic Homotopy;Baues,1989
2. Mixing model structures;Cole;Topol. Appl.,2006
3. Lusternik–Schnirelmann Category;Cornea,2003
4. Abstract sectional category;Díaz;Bull. Belg. Math. Soc. Simon Stevin,2012
5. L.S.-category in a model category;Doeraene;J. Pure Appl. Algebra,1993