The demographic crisis in Bulgaria: trends, problems and prospects
Slavi Dimitrov
More than a collection: the scientific value of woodpecker specimens in the Šariš museum in Bardejov (Slovakia)
Alexander Csanády, Tomáš Jászay, Branislav Tej, Peter Krišovský, Veronika Cibuľková
Overview of the Halyomorpha halys (Stål, 1855): Key Traits and Control Measures. Threats to agricultural crops in Bulgaria
Plamen Chamurliyski
Ethnobotanical study of medicinal plants used for prevention and treatment of Covid-19 in Northeastern Bulgaria. Part 1: The source of phytotherapy knowledge and safety concerns
Asya Dragoeva, Zheni Dimitrova, Seliha Lyoteva, Vanya Koleva
Innovative Smart and Self-Regulating Roundabouts
Marco Guerrieri, Masoud Khanmohamadi
Assessment of natural background radiation in the tourist area of Biserna Cave based on in situ measurements
Karamfil Kalchev, Gergana Manova, Lyubomir Manov, Nikolay Kulev
Geography as a network: Linking minds, disciplines and generations
Milen Penerliev
New insights into the fauna of Slovak Moth flies (Diptera: Psychodidae, Psychodinae): A supplement to the Prodromus
Jan Ježek, Jozef Oboňa, Jozef Lukáš
Possibilities of using plant species from 62С0* Ponto-Sarmatic steppes natural habitat for decorative purposes
Mariya Kaschieva, Petya Boycheva
Reinforced Concrete slabs designed by Finite Element Methods - A Case study
Enkeleda Kokona
An overview of the chemical profile of some aromatic-medicinal plants of the South region (Llogara) in Albania
Markos Konini, Aurel Nuro
A Novel AES-Based Encryption Model with Multi-Feature Security Enhancements
Mohammad Awis Al Lababede, Ashraf M A Ahmad