LSJ
τᾶς, τοῦ, Dor. for ἑαυτοῦ, τῆς, τοῦ, IG 5(2).265.18 (Mantinea), GDI 1696, al. (Delph.), 4959 (Eleutherna), IG 4.840.3 (Calauria); cf. αὖς· αὐτός (Cret., Lacon.), Hsch. ; Delph. αὐσωτόν, αὐσωτῶν, GDI 1696, SIG 703.11; Boeot. ἀσαυτῦ, = ἑαυτῷ, IG 7.3303 (Chaeronea); cf. αὐταυτοῦ.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)