Gregory Palamas.
Logoi apodeiktikoi antepigraphai epistolai pros Barlaam kai akindynon hyper hēsychazontōn /
ekdidoun : B. Bobrinsky ... [et al.] 
. - Thessalonikē : Panagiōtou K. Chrēstou,  1962 
. - 742 h.  24 cm.