Published in Scopus, in 1992, in volume 14, pages 129-158

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Published in Scopus, in 1992, in volume 15, pages 65-83

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Published in Scopus, in 1992, in volume 15, pages 102-108

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Published in Scopus, in 1992, in volume 15, pages 128

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Published in Scopus, in 1992, in volume 15, pages 135-136

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Published in Scopus, in 1992, in volume 15, pages 138

Published in Scopus, in 1992, in volume 16, pages 1-8

Published in Scopus, in 1992, in volume 16, pages 9-13

Published in Scopus, in 1992, in volume 16, pages 14-17

Published in Scopus, in 1992, in volume 16, pages 18-21

Published in Scopus, in 1992, in volume 16, pages 22-28

Published in Scopus, in 1992, in volume 16, pages 29-33

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Published in Scopus, in 1992, in volume 16, pages 50-54

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Published in Scopus, in 1992, in volume 16, pages 59-60