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[1]Proceedings-IndianAcademyofSciences,SectionA,1953,p.480,490
[1]Proceedings-IndianAcademyofSciences,SectionA,1948,p.217,220
[1]Murti;Seshadri[Proceedings-IndianAcademyofSciences,SectionA,1948,#27,p.217,220]
[1]Proceedings-IndianAcademyofSciences,SectionA,1949,p.72,75