List of the studied authors
Corral Estrada & Pereiro Muñoz, 1974 (tab.I); Kovalev & Schmeleva, 1982 (p.83); Vives, 1982 (p.290); Greze & al., 1985 (p.7); Lozano Soldevilla & al., 1988 (p.57); Siokou-Frangou, 1997 (tab.1); Mauchline, 1998 (tab.58); Razouls & al., 2000 (p.343, Appendix); Vukanic, 2003 (139, tab.1); Mazzocchi & Di Capua, 2010 (p.426); Uysal & Shmeleva, 2012 (p.909, Table I); Lidvanov & al., 2013 (p.290, Table 2, % composition); Benedetti & al., 2016 (p.159, Table I, fig.1, functional characters); Belmonte, 2018 (p.273, Table I: Italian zones)