1. K-Ar and Rb-Sr ages of intrusive Precambrian mafic rocks, southern Beartooth Mountains, Montana and Wyoming;Baadsgaard;Geol. Soc. Am. Bull.,1973
2. Reconnaissance Rb-Sr dating of the Precambrian rocks of southern Peninsular India;Crawford;J. Geol. Soc. India,1969
3. The age of the Cuddapah and Kurnool Systems, southern India;Crawford;J. Geol. Soc. Aust.,1973
4. Dolerite dikes of Satnur-Halaguru area, Mysore State;Devaraju;Karnatak Univ. J. Sci.,1966
5. Strontium Isotope Geology;Faure,1972