Jiang, W, Jones, WK, Wang, TL et al. (1991). Free vibration of helical springs
. JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME, 58(1), 222-228. 10.1115/1.2897154
Jiang, W, Jones, WK, Wang, TL et al. (1991). Free vibration of helical springs
. JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME, 58(1), 222-228. 10.1115/1.2897154