El formante <i>-n</i> y el origen de la flexión heteroclítica del indoeuropeo

The author, based on the recent bibliography and on the existence of the heteroclisis of the type -pl-n on Etruscan (which he understands as an Indoeuropean language), gives new proposals on this subject. He thinks that the three types of heteroclisis are old: -pl-n, -rl -n, -rl -p. Within them -n is not a connecter. They are traces of an attempt of creating a nominal flexion opposing two themes and with a wider value than the cases. These cases are a new formalization of the flexion, where the desinences are added whether to the theme itself or to the different themes of the heteroclite flexion