[MathOuvrage]
Secondary cohomology operations
/ Harper, John R..
-Providence RI : American mathematical Society, 2002. - xi, 268 p. ; 26 cm
ISBN 9780821831984
[MathCongrès]
Lusternik-Schnirelmann category and related topics
/ Ed. Cornea, O. ; Ed. Lupton, G. ; Ed. Oprea, John ; Ed. Tanré, Daniel.
-Providence RI : American mathematical Society, 2002. - viii, 203 p. ; 26 cm