Authors
V. Zavtkevics
Riga Technical University, Institute of Aeronautics, Department for Transport Systems and Logistics, Riga, Latvia
M. Urbaha
Latvian Maritime Academy, Riga, Latvia
© 2022 V. Zavtkevics, M. Urbaha, published by Institute of Physical Energetics
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.