sphere. On the motions and stations of the planets. On geography. On erroneous knowledge. On instruments. On certain (selected) problems" Jyotiṣaratnakośa: A popular book on astronomy in India A commentary on Brahmagupta's Khandakhadyaka, now lost Notes References K. V. Sarma. "Lalla." Encyclopaedia of the History of Science, Technology, and Medicine in Non-Western Cultures, ed. Helaine Selin, Dordrecht: Kluwer Academic Publishers, 1997, p. 508. "Lalla." Complete Dictionary of Scientific Biography. Vol. 7. Detroit: Charles Scribner's Sons, 2008. 582-583. Gale Virtual Reference Library. Web. 3 June 2013. Bracher, Katherine. The Biographical Encyclopedia Of Astronomers [Electronic Resource] / Edited By K. Bracher ... [Et Al.]. n.p.: New York ; London : Springer, 2006., 2006. UNIV OF OKLAHOMA LIBRARIES's Catalog. Web. 6 June 2013. 8th-century Indian astronomers 8th-century Indian mathematicians 720 births 790 deaths Scholars from Gujarat