edited by T. Kakeshita, Takashi Fukuda, Avadh Saxena and Antoni Planes
Springer, 2012
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edited by G.W. Crabtree and P. Vashishta
North-Holland , 1982
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Artikel Jurnal
Sethi, H. M.
New Delhi: Tata McGraw-Hill, 1991
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Crouse, William H.
McGraw-Hill, 1980
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