Modelling of a Hall Effect-Based Current Sensor with an Open Core Magnetic Concentrator. - Ivan Yatchev; Mehmet Sen; Iosko Balabozov; Ivan Kostov (Sensors, 2018)

Price Competition with Differentiated Products on a Two-Dimensional Plane: The Impact of Partial Cartel on Firms' Profits and Behavior. - Stanislav Stoykov; Ivan Kostov (Games, 2023)