NYKÄNEN, A.; JAUHIAINEN, L.; KEMPPAINEN, L. Field-scale spatial variation in yields and nitrogen fixation of clover-grass leys and in soil nutrients. Agricultural and Food Science, [S. l.], v. 17, n. 4, p. 376–393, 2008. DOI: 10.2137/145960608787235568. Disponível em: https://journal.fi/afs/article/view/5927. Acesso em: 22 nov. 2024.