Enlace Permanente
https://cosechador.siu.edu.ar/bdu/Record/paper:paper_0022152X_v25_n4_p1059_Erra%C3%83%C2%A2%C3%82%C2%80%C3%82%C2%90Balsells
https://cosechador.siu.edu.ar/bdu/Record/paper:paper_0022152X_v25_n4_p1059_Erra%C3%83%C2%A2%C3%82%C2%80%C3%82%C2%90Balsells