2
Article
13
Book
14
by Savigear, R. A. G.
Published 1965
Book
15
by Imhof, Eduard, 1895-1986
Published 1965
Book
16
17
18
by Podhorský, Ivan
Published 1980
Book
19
Book
20
by Švecová, Zuzana.
Published 2004
Thesis Manuscript