Review of an Accelerometer Based Digital Pen with Trajectory recognition Algorithm for Handwritten Digit and Gesture Recognition. International Journal of Current Engineering and Technology, [S. l.], v. 4, n. 4, p. 2396–2400, 2014. Disponível em: https://ijcet.evegenis.org/index.php/ijcet/article/view/1052. Acesso em: 10 apr. 2026.