THEORETICAL ASPECTS ON THE MOVEMENT OF PLANT FRAGMENTS ON THE SURFACE OF A PLANE SIFTERS CLASSIFIER. Journal of Engineering Studies and Research, [S. l.], v. 21, n. 3, p. 65–78, 2015. DOI: 10.29081/jesr.v21i3.145. Disponível em: https://jesr.ub.ro/journal/article/view/145. Acesso em: 13 sep. 2025.