Type of Publication: Journal Article

1999
79
849 - 856
Journal Article
1998
74
97 - 114
Journal Article
1998
24
77-91
Journal Article
1992
28
69-82
Journal Article

Type of Publication: Conference Proceedings

1997
II
351-353
Conference Proceedings
1997
Kavala, Greece
233-236
Conference Proceedings
1997
II
Conference Proceedings
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