“Functional-Cost Analysis of the “VALVETRONIC” System of “N-Series” Engines of ‘BMW’ Cars”. Visnyk of Vinnytsia Politechnical Institute, no. 1 (February 28, 2023): 72–81. Accessed November 15, 2026. https://vpi.sprava.net/index.php/visnyk/article/view/2846.