Links with contemporary plays and playwrights can be, and have been, variously interpreted as evidence of influence or evidence of common authorship.

Even afterwards Venkata Sastry published all his work under their common authorship.

A similar style implies common authorship, while a radically divergent vocabulary implies different authors.

Beyond their common authorship, the operas have hardly anything in common.

Recognition of the common authorship of all three sections necessarily assigns the entire compendium to this author.

"The evidence of common authorship is far more extensive, detailed and compelling than the F.B.I. has suggested," he said in the court document.

The common authorship of some Book of Leinster texts [III.

The two stories are not obviously linked, other than by their common authorship.

There's now a question about whether there's actually any common authorship involved.

So it's very clear now that there was - we don't know the details of common authorship.