Barraza-Madrgial, J. A., R. Muñoz-Guerrero, L. Lejia-Salas, and R. Ranta. “Instantaneous Position and Orientation of the Body Segments As an Arbitrary Object in 3D Space by Merging Gyroscope and Accelerometer Information”. Revista Mexicana De Ingenieria Biomedica, vol. 35, no. 3, Sept. 2014, pp. 241-52, https://rmib.mx/index.php/rmib/article/view/191.