Emotional intelligence - smart strategy for business success. medzinárodná vedecká konferencia. Emotional intelligence - smart strategy for business success : conference papers. Rec. Maria Radoslavova, Antonina Kardasheva. 1. vyd. Sofia : Foundation for developing emotional intelligence, 2021. Dostupné na internete: <http://foundation-ei.com/> ISBN 978-619-92037-0-5.