M. A. García Murillo, D. A. Núñez Altamirano, J. Gallardo Alvarado, and R. E. Sánchez Alonso, “Algorithm to determine the volume and shape of constant orientation workspace for parallel robot 2(3-RRPS)”, IEEE LAT AM T, vol. 18, no. 7, pp. 1156–1163, May 2020.