Déformation des congruences paraboliques de droites dans
Bohumil Cenkl (1961)
Czechoslovak Mathematical Journal
Similarity:
Bohumil Cenkl (1961)
Czechoslovak Mathematical Journal
Similarity:
Karel Svoboda (1970)
Czechoslovak Mathematical Journal
Similarity:
Alois Švec (1957)
Czechoslovak Mathematical Journal
Similarity: