D. M. Lu and W. M. Hwang, Spherical Four-bar Linkages with Symmetrical Coupler-curves, Mechanism and Machine Theory, 1996/01, SCI.

• 卢灯茂和黄文敏；具对称耦杆曲线之平面与球面四连杆机构；中华民国机构与机器原理学会会刊；1996/07；其他.