Menh, Nguyen Cao, Nguyen Van Dac, Vu Tan Khiem, and Hoang Nga. 2000. “Simulation and Computation of Oscillation and Stability of Hammer-Pontoon Systems”. Vietnam Journal of Mechanics 22 (1). Hanoi, Vietnam:39-46. https://doi.org/10.15625/0866-7136/9961.