WOJTASIK, Mieczysław; SZATTEN, Dawid Aleksander. Wyznaczanie gęstości naturalnej gleb = Determination of natural bulk density of soils. Journal of Education, Health and Sport, [S. l.], v. 5, n. 3, p. 218–228, 2015. Disponível em: https://apcz.umk.pl/JEHS/article/view/2594. Acesso em: 7 jul. 2025.