Alves, F., Cunha, P., & Gomes-Pereira, J. (1999). Kinematic changes with inspiratory actions in butterfly swimming. Biomechanics and medicine in swimming VIII : Proceedings of the International Symposium on Biomechanics and Medicine in Swimming. University of Jyväskyla, Finland June 28 - July 2, 1998, S. 9-14.

Alves, Francisco, Paulo Cunha, and Jose Gomes-Pereira. "Kinematic Changes With Inspiratory Actions in Butterfly Swimming." Biomechanics and Medicine in Swimming VIII : Proceedings of the International Symposium On Biomechanics and Medicine in Swimming. University of Jyväskyla, Finland June 28 - July 2, 1998 1999: S. 9-14.

Alves, Francisco, Paulo Cunha, and Jose Gomes-Pereira. "Kinematic Changes With Inspiratory Actions in Butterfly Swimming." Biomechanics and Medicine in Swimming VIII : Proceedings of the International Symposium On Biomechanics and Medicine in Swimming. University of Jyväskyla, Finland June 28 - July 2, 1998 1999: S. 9-14.