"With the changes in my lab and the loss of some key collaborators, it was difficult to come up with new ideas," he says.

Denis Diderot (1713-1784) was a key collaborator in the creation of the Encyclopédia.

In the early 1990s, whilst still a graduate student, he met Joshua M. Epstein who was to become a key collaborator.

Another key collaborator was producer Tony Visconti, who went on to produce the band's albums well into their second, glam rock phase.

Mr. Salinas has been a key collaborator in President de la Madrid's push for freer markets and austerity.

However Basiliscus managed to estrange himself from most of his key collaborators.

The guest director serves as a key collaborator in all of the festival's programming decisions, bringing new ideas and, quite often, overlooked films to Telluride.

It was their first film with cinematographer Roger Deakins, a key collaborator for the next 15 years.

From the beginning, Lottie Lyell was a key collaborator for him as an actor, writer, producer and (later) co-director.

At the university, as well as within the small towns and villages, the sisters became key collaborators in the pursuit of the common goal of development.