| 1990* ‘Islamic Calendar and Indian Eras’ in: G. Kuppuram & K. Kumudamani (ed), History of Science and Technology in India, vol. 2, pp. 433-441, Delhi 1990. |
|
| 1990* ‘Historical Notices on Gem Cutting in India’ in: G. Kuppuram & K. Kumudamani (ed), History of Science and Technology in India, vol. 4, pp. 141-158, Delhi 1990. |
|
| 1989* ‘Vedic Mathematics vs Mathematics in the Veda,’ Vān  ī-jyotih, Journal of the Department of Sanskrit, Utkal University, Bhubaneswar, 4 (1989) 53-65. |
 |
| 1987** ‘Astronomical Instruments in Brahmagupta’s Brāhmasphut asiddhānta,’ Indian Historical Review, 13 (1986-87) 63-74. |
|
| 1987* ‘The Pāvulūrigan itamu: the First Telugu Work on Mathematics,’ Studien zur Indologie und Iranistik, 13-14 (1987) 163-176 (Festschrift Wilhelm Rau). |
|
| 1986* ‘Thakkura Pheru and the Popularisation of Science in India in the Fourteenth Century’ in: Sri Bhanwar Lal Nahata Abhinandana Grantha, Calcutta 1986, pt 4, pp. 63-72. Reprinted in Jain Journal, 21.3 (January 1987) 86-95; and again in Jainanthology, Calcutta 1991, pp. 146-156. |
| 1986 ‘Palaeographic Notes,’ Aligarh Journal of Oriental Studies, 3.2 (1986) 125-140. |
|
| 1986 ‘The Sources and Authorship of the Yuktikalpataru,’ Aligarh Journal of Oriental Studies, 3.1 (1986) 39-54. |
|
| 1985* ‘Writing Material in Ancient India,’ Aligarh Journal of Oriental Studies, 2 (1985) 175-196. |
|
| 1985* ‘Mathematical Literature in Telugu: An Overview,’ Sri Venkateswara University Oriental Journal, 28 (1985) 77-90. |
|
| 1985** ‘An Unpublished MS on Arab Astronomical Instruments attributed to Sawai Jai Singh II: A Preliminary Report,’ Studies in History of Medicine and Science, 9.1-2 (1985) 86-95. |
|
| 1983* ‘Varṇamālikā System of Determining the Fineness of Gold in Ancient and Medieval India’ in: Aruna-Bharati: Professor A. N. Jani Felicitation Volume, Baroda 1983, pp. 369-389. |
|
| 1983* ‘Tools of the Lapidary according to the Agastyasahitā’ in: Āmbhr nīyam: Acharya Ramesh Chandra Shukla Felicitation Volume, Badaun 1983, pt. 5, pp. 44-52. |
|