BACH DE ROCA, Carmen; GAJU-RICART, Miguel. In Memoriam: Helmut Sturm 1929–2015. Soil Organisms, [S. l.], v. 87, n. 3, p. v–vi, 2015. Disponível em: https://www.soil-organisms.org/index.php/SO/article/view/295.. Acesso em: 1 may. 2025.