Coupled vibration characteristics of hybrid gear transmission systems. - Shuai Mo; Kaihang Deng; Daixin Bai; Bowei Yao; Sujiao Chen; Yurong Huang; Wenai Shi; Nanjiang Peng; Haruo Houjoh; Wei Zhang (Commun. Nonlinear Sci. Numer. Simul., 2026)