4rd International Multidisciplinary Scientific Conference on Social Sciences & Arts SGEM 2017, 24 - 30 August 2017 Albena, Bulgaria : Book 1. Modern science. Economics & Tour
Nikolaev, Rosen Nikolaev, Zhelyazkova, Donka Dimitrova, Milkova, Tanka Vasileva Modeling of Optimal Structure of the Passengers Transport in Bulgaria,
STEF92 Technology Ltd., 2017, pp. 525 - 532, ISBN 978-619-7408-16-4 ; ISSN 2367-5659.
Nikolaev, Rosen Nikolaev, Zhelyazkova, Donka Dimitrova, Milkova, Tanka Vasileva .
Modeling of Optimal Structure of the Passengers Transport in Bulgaria.
Sofia: STEF92 Technology Ltd., 2017, pp. 525 - 532, ISBN 978-619-7408-16-4 ; ISSN 2367-5659.
Nikolaev, Rosen Nikolaev, Zhelyazkova, Donka Dimitrova, Milkova, Tanka Vasileva (2017)
Modeling of Optimal Structure of the Passengers Transport in Bulgaria,
Sofia: STEF92 Technology Ltd., pp. 525 - 532, ISBN 978-619-7408-16-4 ; ISSN 2367-5659
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