The papyrus fragments of Sophocles : an edition with prolegomena and commentary - Sophocles, sec. V a.C (de Gruyter, 1974)
Texts of the fragments in Greek; commentary in English.
"Of the dozen or so pieces which I deal with here, only four (nos. 1-4) can be assigned to Sophocles with any degree of certainty,--and there is some small room for doubt about nos. 2 and 3. I have included all fragments in which I could see some definite grounds for this ascription."