List of citations in Numdam for : The Lusternik-Schnirelman categories of a product space

Compositio Mathematica, Volume 22 (1970) no. 2, p. 175-180

Cornea, Octavian

Annales scientifiques de l'École Normale Supérieure, Serie 4, Volume 28 (1995) no. 6, p. 689-704