Silva, L. F., M. Lima, C. Couto, J. Coelho, F. N. Ferreira, and A. M. Rocha. “Mechatronics Approach for a Controlled Actuation of the Presser Foot Mechanism on an Industrial Sewing Machine”. Acta Polytechnica, vol. 40, no. 4, Jan. 2000, https://ojs.cvut.cz/ojs/index.php/ap/article/view/110.