Asaru-l Bilad of Zakari’ya Al Kazwini in the History of India as Told by its Own Historians; The Posthumous Papers of the Late Sir H. M. Elliot; John Dowson, Calcutta: Susil Gupta, 1956, vol. 10. Download link: http://www.infinityfoundation.com/mandala/h_es/h_es_asaru_frameset.htm
,’ replied Sir Khanca. b Discoloration of Marble during Laser Cleaning by Nd:YAG Laser Wavelengths; S. Kleina, F. Fekrsanatia, J. Hildenhagena, K. Dickmanna, H. Uphoffb, Y. Marakisc, V. Zafiropulos. Download link: http://144.206.159.178/ft/68/31995/556305.pdf