Materials for the study of Āryadeva, Dharmapāla and Candrakīrti : the Catuḥśataka of Āryadeva, chapters XII and XIII, with the commentaries of Dharmapāla and Candrakīrti / introd., transl., Sanskrit, Tibetan and Chinese texts, notes by Tom J.F. Tillemans / Wien : Arbeitskreis für Tibetische und Buddhistische Studien, Universität Wien , 1990