KARKANIS, A. C.; PETROPOULOS, S. A. Physiological and Growth Responses of Several Genotypes of Common Purslane (Portulaca oleracea L.) under Mediterranean Semi-arid Conditions. Notulae Botanicae Horti Agrobotanici Cluj-Napoca, v. 45, n. 2, p. 569-575, 15 Sep. 2017.