J. Roldán-Mckinley, C. A. Zambrano-Miranda, J. F. Alonso-González, L. Campo-Escudero, and R. Araújo-Segura, “Training bench design for practical valve coefficient determination, standard VDI/VDE 2173”, I2+D, vol. 18, no. 1, pp. 5–15, Jan. 2018.