%0 Journal Article %A Kopeček, Oldřich %T Existence of monomorphisms of partial unary algebras %J Czechoslovak Mathematical Journal %D 1978 %P 462-473 %V 28 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1978.101551/ %R 10.21136/CMJ.1978.101551 %G en %F 10_21136_CMJ_1978_101551