Aryabhatiya - Wikipedia, The Free Encyclopedia At least twelve notable commentaries were written for the Aryabhatiya ranging from the time he was still alive (c. 525) through 1900 ( Aryabhata I 1502). http://en.wikipedia.org/wiki/Aryabhatiya
Anusandhan.net, Indian S T Portal Lalla was an Indian astronomer and mathematician who followed the tradition of Aryabhata I. Lalla's most famous work was entitled Shishyadhividdhidatantra. http://www.anusandhan.net/kids/old/lalla_5htm.jsp
Surya-Siddhanta (Text With English Translation) All these three stages are discernible firstly from a comparison of the astronomical constant of the modern book with those of Aryabhata I as given or indicated in the http://www.exoticindiaart.com/book/details/IDJ470/