2010**
‘The Makers, Designers and Patrons of Sanskrit Astronomical Instruments: An Alphabetical Directory of Names and Related Inscriptions,’ Journal of the Oriental Institute, 60.1-2 (Sept-Dec 2010) 75-108.

2010*
‘Nandigrāma of Gaṇeśa Daivajña,’ Indian Journal of History of Science, 45 (2010) 569-574.

2010*
‘The Date of Āryabhaṭa: Refutation of V. Lakshmikantham’s untenable View,’ Indian Journal of History of Science, 45 (2010) 411-417.

2009*
‘On the Rationale of the Maxim aṅkānāṃ vāmato gatiḥ,’ Gaṇita Bhāratī, 31 (2009) 65-86.

2009*
‘Early Transmission of Indian Mathematics’ in: George Gheverghese Joseph (ed), Kerala Mathematics: History and its Possible Transmission to Europe, Delhi 2009, pp. 205-231.

2009*
‘Persian-Sanskrit Lexica and the Dissemination of Islamic Astronomy and Astrology in India’ in: Gherardo Gnoli & Antonio Panaino (ed), KAYD: Studies in History of Mathematics, Astronomy and Astrology in Memory of David Pingree (Serie Orientale Roma, CII), Rome 2009, pp. 129-150.

2008**
‘Cataloguing Indian Astronomical Instruments’ in: Kalyan Kumar Chakravarty (ed), Tattvabodha: Essays from the Lecture Series of the National Mission for Manuscripts, vol. II, New Delhi 2008, pp. 141-157.

2008*
‘On the Life and Works of Rāmacandra Vājapeyin’ in: Radhavallabh Tripathi (ed), Śrutimahatī: Glory of Sanskrit Tradition: Professor Ram Karan Sharma Felicitation Volume, New Delhi 2008, vol. 2, pp. 645-661.

2008**
‘Indian Astronomical Instruments in German Collections,’ XXX. Deutscher Orientalistentag, Freiburg, 24.-28. September 2007. Ausgewählte Vorträge, hrsg. im Auftrag der DMG von Rainer Brunner et al. Online-Publikation, Februar 2008.

2006**
‘Instrumentation for Astronomy and Navigation in India at the Advent of the Portuguese’ in: Lotika Varadarajan (ed), Indo-Portuguese Encounters: Journeys in Science, Technology and Culture, New Delhi 2006, Volume II, pp. 505-513.

2006
‘Mahābhārata Testimonia in the Br̥hatkathāślokasaṃgraha,’ Journal of the Sukr̥tīndra Oriental Research Institute, 7.2 (April 2006) 17-29.

2006*
‘Mathematics and Iconography in Līlāvatī 263,’ Journal of the Asiatic Society of Mumbai, 80 (2005-2006) 115-126.

2006*
‘Granthālaṃkāra,’ Brahmavidyā: Adyar Library Bulletin, 68-70 (2004-06) 271-278.

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