Commentaries
Schechter gives the commentaries to Abot de-Rabbi Nathan in his edition, xxvii. et seq. Emendations were made by Benjamin Motal in his collectanea, called Tummat Yesharim, Venice, 1622. Commentaries have been written by Eliezer Lipman of Zamość, Zolkiev, 1723; by Elijah ben Abraham with notes by The Vilna Gaon, Wilna, 1833; by Abraham Witmand, Ahabat Ḥesed, Amsterdam, 1777; and by Joshua Falk, Binyan Yehoshu'a, Dyhernfurth, 1788.
Read more about this topic: Avot Of Rabbi Natan