1984. ‘"samatha-yāna" and "vipassanā-yāna"’ in "buddhist studies in honour of hammalava saddhatissa," ed. gatare dhammapala et al., nugegoda"," sri lanka, university of sri jayewardenapura, pp. 56-68: a key discussion of the various ways in which "samatha" and "vipassanā" meditation can be combined.