^ De Vaan, Michiel (2008) Etymological Dictionary of Latin and the other Italic Languages (Leiden Indo-European Etymological Dictionary Series; 7)[1], Leiden, Boston: Brill, →ISBN
^ Kocharov, P. (2010) “The Etymology of Armenian gełardn ‘Spear’”, in Indojevropejskoje jazykoznanije i klassičeskaja filologija - XIV. Materialy čtenij, posvjaščennyx pamjati prof. I.M. Tronskovo[2], volume II, Saint Petersburg: Nauka, pages 83–89