Computer system for processing of the requests to the 144 phone number. - Milen Lukanchevski; Hikolay Kostadinov; Hovanes Avakyan (CompSysTech, 2000)

Call route identification in telephone traffic monitoring systems. - Milen Lukanchevski; Hikolay Kostadinov; Hovanes Avakyan (CompSysTech, 2000)

A Testbed of Non-determinism in Educational Context. - Milen Loukantchevsky; Nikolay Kostadinov; Hovanes Avakyan (CompSysTech, 2019)