1. Chaurasiya, H., Baxi, B.O.: A study on customers’ approaching by shipping companies in line with relationship management. International Journal of Creative Research Thoughts, 9 (6), 253–267. (2021).
2. Christiansen, M., Hellsten, E., Pisinger, D., Sacramento, D., Vilhelmsen, C.: Liner shipping network design. European Journal of Operational Research, 286 (1), 1–20. (2020).
3. Diskienė, D.: Vadybos teorijos. Visuotinė lietuvių enciklopedija, XXIV, 496–497. Vilnius: Mokslo ir enciklopedijų leidybos centras. (2013).
4. Functions of personnel management: Managerial, operative and general functions. Economics Discussion. (2022). https://www.economicsdiscussion.net/personnel-management/functions-of-personnel-management-managerial-operative-and-general-functions/31456
5. Huang, Q., Ohmori, S., Yoshimoto, K.: Introducing tramp and liner shipping model to production planning. Proceedings of the 9th International Conference on Operations and Supply Chain Management, 1–7. RMIT University. (2019).