The Sekanirdeśa of Maitreyanātha (Advayavajra) with the Sekanirdeśapañjikā of Rāmapāla. Critical Edition of the Sanskrit and Tibetan Texts with English Translation and Reproductions of the MSS. Edited by Harunaga Isaacson and Francesco Sferra. With Contributions by Klaus-Dieter Mathes and Marco Passavanti