As knowledge and practice of spiritualism grew, Vay did great pioneer work.

A forgotten figure by 1900, his pioneer work was subsequently widely recognized.

"Americans have done a lot of pioneer work in direct marketing psychology, and they are brilliant practitioners," he said.

His inventions included both military applications and pioneer work in cinematography.

It was a piece of pioneer work in iron casting.

He did all the pioneer work on his own.

We're doing some pioneer work, and it's good to be where the action is.

Kaiserling is also known for his pioneer work in the field of photomicrography.

He made a pioneer work in the field of the Hungarian commercial graphics.

It is regarded a pioneer work of its kind, and has later been analyzed by several literary historians.