Song, S.-M., Waldron, K., & Kinzel, G. (1985). Computer-Aided Geometric Design of Legs for a Walking Vehicle. Mechanism and Machine Theory. https://doi.org/10.1016/0094-114X(85)90075-8
Song, Shin-Min, Kenneth Waldron, and Gary Kinzel. 1985. “Computer-Aided Geometric Design of Legs for a Walking Vehicle”. Mechanism and Machine Theory. https://doi.org/10.1016/0094-114X(85)90075-8.
Song, S.-M., K. Waldron, and G. Kinzel. Computer-Aided Geometric Design of Legs for a Walking Vehicle. Mechanism and Machine Theory, 1 Jan. 1985, doi:10.1016/0094-114X(85)90075-8.