Atanasov, B., R. Nikolaev, R. Miryanov (2012). Kolichestveni metodi v upravlenieto. Varna: Nauka i ikonomika, s. 120 – 121.
Charnes, A., W. Cooper. (1962) Programming with Linear Fractional Functionals. Naval Res. Logist. Quart. vol. 9, № 3-4.
Ivanov, I., Bl. Blagoev. (2000) Ikonomika na predpriyatieto. Varna: Nauka i ikonomika, s. 158.
Kenderov, P., G. Hristov, As. Donchev. (1989) Matematichesko optimirane. Sofiya: Universitetsko izdatelstvo „Kliment Ohridski”, s. 146.
Martos, B. (1961) Hyperbolic by Simplex Method. 2-eme congr. math. Hon-grois, Budapest.
Nikolaev, R., D. Zhelyazkova, T. Milkova, R. Miryanov, V. Yordanova. (2019) Optimizirane na ikonomicheski protsesi v proizvodstveno-transportnata sistema na predpriyatieto. Bibl. „Prof. Tsani Kalyandzhiev”, Kniga shestdeset i vtora. Varna: Nauka i ikonomika.
Nikolaev, R., D. Zhelyazkova, T. Milkova. (2018) Minimizing the transportation costs by means of three dimensional transportation problem. // 5rd International multidisciplinary scientific conference on social sciences & arts SGEM 2018, 26 August – 01 September 2018 Albena, Bulgaria. Conference proceedings – Issue 1.4, Modern science, Economics and Tourism, Volume 5, pp. 549 – 556. DOI: 10.5593/sgemsocial2018/1.4;
Nikolaev, R., T. Milkova. (2018) Optimizirane na transportnite razhodi chrez mnogoproduktova transportna zadacha. // Sbornik s dokladi ot mezhdunarodna nauchna konferentsiya „Targoviya 4.0 – nauka, praktika i obrazovanie“. Varna: Nauka i ikonomika, 2018, s. 316 – 324.
Nikolaev, R. (2016) Optimizirane proizvodstveno-transportnoto planirane na predpriyatieto s otnositelni kriterii. „Prof. Tsani Kalyandzhiev”, Varna: Nauka i ikonomika.
Suharov, A. G., A. V. Timohov, V. V. Fedorov (1986). Kurs metodov optimizatsii. Moskva: Nauka, s. 138