Type of Publication: Journal Article

1999
30
841 - 847
Journal Article
1999
7
361 - 364
Journal Article
1998
18
198 - 200
Journal Article
1998
18
15 - 18
Journal Article
1997
17
174 - 176
Journal Article
1996
27
147 - 156
Journal Article
1995
26
185 - 194
Journal Article
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