A colleague, retired professor at the University of Liège (ULg), Eric Pirart, is specialised in this kind of question.
Unhappily, I don't know his mail address, but you probably will find it by looking at ULg website.
Best regards,
Jean Michel DELIRELecturer on History of mathematics - IHEB (University of Brussels, ULB)
Lecturer on Science and civilisation of India - Sanskrit Texts - IHEB (ULB)
Member of the Centre National d'Histoire des Sciences (KBR, Bruxelles)
Member of the Société Asiatique (Paris)
Member of the International Association of Sanskrit Studies