Comparative studies in Greek and Indian Philosophies" by Thomas McEvilley (Allworth Press and the School of Visual Arts, 2002) ISBN 1-58115-203-5* "Buddhism in Central Asia" by B. N. Puri (Motilal Banarsidass Pub, January 1, 2000) ISBN 81-208-0372-8* "The Greeks in Bactria and India", W. W. Tarn, Cambridge University Press.
Comparative studies in Greek and Indian Philosophies» by Thomas McEvilley (Allworth Press and the School of Visual Arts, 2002) ISBN 1-58115-203-5* «Buddhism in Central Asia» by B.N.