UA1 was perhaps the most productive collaboration in the history of particle physics up to that date.

Probably his most productive collaboration is with longtime friend and writer Charles de Lint.

"Clearly a productive collaboration between communities and companies would be something revolutionary," he wrote.

This film also started a long productive collaboration with Catherine Deneuve.

From this brief but productive collaboration on the problem of points, they are now regarded as joint founders of probability theory.

After the war he began a productive collaboration with his father.

This was the beginning of their short-lived but productive collaboration.

Lazarsfeld was noted for his ability to forge productive collaborations with a wide range of thinkers.

And this parallel venture with Carnegie may hold promise for real, productive collaborations there, too.

"It has been a pleasant and productive collaboration," the official said.