Thanks to this list and to the generosity of colleagues, I now have the two articles I asked for.
Robert

On Sun, Sep 8, 2024 at 2:48 PM Robert Leach <racleach@googlemail.com> wrote:
Dear colleagues,

I'd be very grateful if anyone could share with me the either/both of the following:

George Chemparathy (1965) "The testimony of the Yuktidīpikā concerning the Īśvara doctrine of the Pāśupatas and Vaiśeṣikas", Wiener Zeitschrift für die Kunde Südasiens und Archiv für indische Philosophie 9: 119-146.

Shujun Motegi (2006) "Śabda in the Yuktidīpikā", Acta Asiatica 90: 39-54.

Many thanks!

Robert Leach