Applications of Coupled Fixed Points for Multivalued Maps in the Equilibrium in Duopoly Markets and in Aquatic Ecosystems. - Gana Gecheva; Miroslav Hristov; Diana Nedelcheva; Margarita Ruseva; Boyan Zlatanov (Axioms, 2021)

Customer Attitude toward Digital Wallet Services. - Galina Ilieva; Tania Yankova; Yulia Dzhabarova; Margarita Ruseva; Delian Angelov; Stanislava Klisarova-Belcheva (Syst., 2023)

Social Media Influencers: Customer Attitudes and Impact on Purchase Behaviour. - Galina Ilieva; Tania Yankova; Margarita Ruseva; Yulia Dzhabarova; Stanislava Klisarova-Belcheva; Marin Bratkov (Inf., 2024)