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Aquino, Christopher J. Ramanjulu, Joshi M. Heyer, Dennis Daniels, Alejandro J. Palazzo, Fabio Dezube, Milana Bioorganic and Medicinal Chemistry, 2004 , vol. 12, # 10 p. 2691 - 2708
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Singh, S. P. Prakash, Indra Tomer, R. K. Prakash, O. M. Sawhney, S. N. Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1983 , vol. 22, # 1 p. 37 - 42