Claudia Melania Chituc, Leibniz Institute for Research and Information in Education (DIPF), Germany
Contact: claudia.melania.chituc@gmail.com / c.chituc@dipf.de
Moise Gabriela, Petroleum-Gas University of Ploiesti, Romania
Contact: gmoise@upg-ploiesti.ro
Hasnaș Maria Isabela, Petroleum-Gas University of Ploiesti