21
22
23
24
25
26
27
28
by Spira, Thomas
Published 1990
Published 1990
Book
29
30
31
by Varga, Janos
Published 1993
Published 1993
Book
32
by Gerö, Andras
Published 1993
Published 1993
Book
33
by Garber, Peter M.
Published 1994
Published 1994
Book
34
35
36
37
38
39
40