42
Published 1992
Serial
44
Published 1920
Serial
46
Published 1962
Serial
47
by Ventruba, Pavel, 1954-
Published 1989
Thesis Manuscript
48
by Dörr, Alfréd
Published 1991
Thesis Manuscript
51
Book
52
54
by Trapl, Jiří, 1880-1965
Published 1958
Book
55
Published 1959
Book
56
by Bader, Thomas J.
Published 2005
Book
57
by Benrubi, Guy I.
Published 2001
Book