Ribikauskas, A., O. Vasilecas, and A. Čaplinskas. “Conceptual Models of the Quality Control Process”. Mathematical Modelling and Analysis 5, no. 1 (December 15, 2000): 143-152. Accessed November 12, 2024. https://transport.vilniustech.lt/index.php/MMA/article/view/9953.