KÖNIG, Brian - DOVÁĽOVÁ, Gabriela. Determinants of Slovak Foreign Trade – Comparison Among V4 Countries Based on Gravity Model. - Registrovaný: Web of Science. In Quantitative Methods in Economics : Multiple Criteria Decision Making XIX. International Scientific Conference. Quantitative Methods in Economics : Multiple Criteria Decision Making XIX : Proceedings of the International Scientific Conference : 23rd May - 25th May 2018, Trenčianske Teplice, Slovakia. - Bratislava : Letra Edu, 2018. ISBN 978-80-89962-07-5, pp. 179-185. VEGA 1/0248/17, VEGA 2/0109/16.

1996 ,No. 1-4. Slovak foreign trade. Bratislava : Slovenská obchodná a priemyselná komora, 1996. 1 zv. štvrťročník [Copy count : 1, currently available 0, at library only 1]

Slovak Foreign Trade. Bratislava : Slovenská obchodná a priemyselná komora. štvrťročník