joint authorship; co-authorship; collaboration; joint work
二人の研究者が共著で論文を発表した。
Two researchers published a paper as co-authors.
この教科書は五名の教授の共著である。
This textbook is a joint work of five professors.
共著の執筆分担を話し合って決めた。
We discussed and decided the division of writing for the joint work.