PETROVČIKOVÁ, Katarína - GAJDOŠ, Jozef. M-pesa: the Innovative Payment System in the Third World Countries. In Acta oeconomica Cassoviensia : scientific journal. - Košice : PHF EU Košice, 2017. ISSN 2585-8785, 2017, vol. 10, no. 2, s. 99-106 online.