Skytsiouk, Volodymyr, and Ruslan Ivanenko. “Justification of the Principles of Coordinate Theory Based on the D’alembert’s Principle and Small Movements”. Technology audit and production reserves 6, no. 2(56) (December 30, 2020): 56–59. Accessed July 20, 2024. https://journals.uran.ua/tarp/article/view/220515.