Трякіна, О., Павленко, О., Волкова, Н. and Кассім, Д. 2018. Usage of E-learning Tools in Self-education of Government Officers Involved in Global Trade Activities. Pedagogy of Higher and Secondary Education. 51, (Dec. 2018), 224–234. DOI:https://doi.org/10.31812/pedag.v51i0.3669.