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1Published 1988“...HD 4415.5 .S797...”
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2Published 1988“...HC 723 .P766...”
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3Published 1996“...HM 276 .D618...”
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4Published 1999“...HE 8689.9 .N5 .C855 1999...”
Conference Proceeding Book -
5
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6Published 1996“...HD 5701.55 .H282...”
Conference Proceeding Book -
7Published 2009“...HC 60 .E42 2009...”
Book