Through friends of her brother, she met Ben Margulies, her first important collaborator.

One of his important collaborators there was Max Neisser.

Though Kaufman had hits with others, Hart is generally conceded to be his most important collaborator.

An important collaborator in his later years was Bella Bychkova.

His most important collaborators came from the trade union's National Commission and took part in negotiations even when they were not members of parliament.

Greenaway has also referred to Vierny as his "most important collaborator".

"He was one of my most important collaborators," Mr. Falco said yesterday.

Mary was nevertheless totally devoted to her husband, and an important unofficial collaborator in his own economic writings.

Vainio's most important collaborator during his last years was producer Jaakko Salo.

One of the most important collaborators during this period was Gerard Malanga.