Gangopadhyay, P. K., and T. K. Pyne. 1978. “A. V. A. Technique in Microfabric Analysis: Examples from Delhi Group at Lalsot in Northeastern Rajasthan”. Journal of Geological Society of India 19 (9):420-25. https://geosocindia.com/index.php/jgsi/article/view/64368.