Teaching Beginners to Program: should we start with block-based, text-based, or both notations? - Tomaž Kosar; Srđa Bjeladinović; Dragana Ostojić; Milica Škembarević; Žiga Leber; Olga Jejić; Filip Furtula; Miloš Ljubisavljević; Ivan Luković; Marjan Mernik (Annals of computer science and information systems)