5
6
Published 1992
Book
7
Published 1994
Book
8
Published 1994
Book
9
by Piskač, Petr
Published 1992
Thesis Manuscript
10
Published 1995
Book
11
12
Published 1972
Book
13
Published 1989
Book
15
by Bax, N. M. A., 1944-
Published 2008
Book
16
by Tumialán, Luis Manuel
Published 2020
Book