The Book of Jubilees also relates Judah's battles with the Amorites (chap. 34) and with the sons of Esau (chapters 37-38).
A medieval work called Midrash Vaiysa‘u also tells versions of the same two stories and seems to be based on Second Temple era sources in Greek. Martha Himmelfarb has translated Midrash Vaiysa‘u in Old Testament Pseudepigrapha: More Noncanonical Scriptures (ed. Bauckham, Davila, and Panayotov; Eerdmans 2013), 1:143-159.
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