О ретракции отображений
G. M. Nepomnyashchij, Jurij Michailov Smirnov (1979)
Czechoslovak Mathematical Journal
Similarity:
G. M. Nepomnyashchij, Jurij Michailov Smirnov (1979)
Czechoslovak Mathematical Journal
Similarity:
Г. Гарг (1973)
Fundamenta Mathematicae
Similarity:
Б. Левшенко (1970)
Fundamenta Mathematicae
Similarity:
Čestmír Vitner (1953)
Czechoslovak Mathematical Journal
Similarity:
Ladislav Procházka (1960)
Czechoslovak Mathematical Journal
Similarity: