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Silvia Gaftandzhieva1), Rositsa Doneva1), Sadiq Hussain2), Ashis Talukder3,4), Gunadeep Chetia2), Nisha Gohain2) 1)University of Plovdiv “Paisii Hilendarski” – Plovdiv (Bulgaria)...

Dr. Daniela Zubović, Dr. Dina Kamber Hamzić Faculty of Science, University of Sarajevo (Bosnia and Hercegovina) https://doi.org/10.53656/math2023-6-3-the Abstract. Understanding divisibility...

Д-р Георги Гачев, акад. Петър Кендеров, проф. д-р Тони Чехларова Институт по математика и информатика, Българска академия на науките (България)...

Dr. Valentin Bakoev, Assoc. Prof. ”St. Cyril and St. Methodius” University of Veliko Tarnovo (Bulgaria) https://doi.org/10.53656/math2023-6-1-mir Abstract. Here we consider...

Dr. Siya Veleva, Assoc. Prof.; Prof. Dr. Eng. Margarita Mondeshka University of Architecture, Civil Eng. and Geodesy – Sofia (Bulgaria)...

Petya Biolcheva, Assoc. Prof. University of National and World Economy Evgeni Valchev, PhD student University of Plovdiv https://doi.org/10.53656/str2023-6s-11-inc Abstract. Corporate...

Доц. д-р Недко Минчев, доц. д-р Венета Христова, гл. ас. д-р Иван Стоянов Великотърновски университет „Св. св. Кирил и Методий“...

Prof. Dimitar Dimitrakiev, Vencislav Stankov, Assist. Prof., Dr. Christiana Atanasova, Assist. Prof. Nikola Vaptsarov Naval Academy (Bulgaria) https://doi.org/10.53656/str2023-6s-9-sim Abstract. Simulator...

Assoc. Prof. Ilian Minkov, Assoc. Prof. Yordan Ivanov University of Economics – Varna https://doi.org/10.53656/str2023-6s-8-imp Abstract. In the current conditions of...

Dr. Tanya Panayotova, Assoc. Prof., Dr. Krasimira Dimitrova, Assoc. Prof., Neli Veleva, PhD student Industrial Management department – Technical University...