(2024). Notes on Number Theory and Discrete Mathematics. "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences.
Tohutoru Kātū Chicago (17th ed.)Notes on Number Theory and Discrete Mathematics. "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences, 2024.
Tohutoro MLA (9th ed.)Notes on Number Theory and Discrete Mathematics. "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences, 2024.
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