Liste des auteurs étudiés
Sewell, 1948 (p.503); C.B. Wilson, 1950 (p.257); Grice & Hulsemann, 1965 (p.224); Björnberg, 1973 (p.344, 387); Lozano Soldevilla & al., 1988 (p.59); Lapernat, 2000 (tabl.3, 4); Salah S. & al., 2012 (p.155, Tableau 1); El Arraj & al., 2017 (p.272, table 2, seasonal composition);