In 1981 he was promoted to the rank of professor.

Then in 1917 he gained the rank of full professor.

He was promoted to the rank of full professor in 1906.

In 2000, she was promoted to the rank of professor.

She was promoted to the rank of full professor in 1989.

He retired with the rank of full professor in 1992.

A major university offered me a position with the rank of full professor.

He was promoted to the rank of assistant professor in 1980.

He was promoted to the rank of professor in 1992.

He held the rank of full professor from 1970 until his retirement in 1978.