Marek ŻYŁA and Jarosław GRABOWSKI, “Russia And Russian-Speaking Separatism in Estonia: Economic, National and Social aspects,” Proceedings of the 35th International Business Information Management Association (IBIMA), ISBN: 978-0-9998551-4-0, 1-2 April 2020, Seville, Spain, p.18848-18855.
Malgorzata Pinkowska and Bogdan Lent, “Soft Skills Needed in the ICT Project Management – Scientists and Practitioners Awareness,” Proceedings of the 15th International Business Information Management Association (IBIMA), ISBN: 978-0-9821489-4-5, 6- 7 November 2010, Cairo, Egypt, p.361-371.