... Quy Dac, Phan Quang The, Effective method for Optimal splitting of Total transmission ratio of Coaxial helical gearboxes, School on Computational Sciences and Engineering: Theory and Application, ... International colloquium in mechanics of solids, fluids, structures and interactions, Nha Trang, Vietnam (2000), pp. 716- 719.[5] Vu Ngoc Pi, Optimal Calculation of Partial Transmission Ratios of Helical ... Transmission Ratios of Helical Gearboxes with First-Step Double Gear-Sets, Int. Workshop on Advanced Computing and Applications (ACOMP 2008), Ho Chi Minh city, Vietnam, 2008, pp. 287-294. [6] Vu...