He obtained his PhD as a result of these studies.
He obtained his PhD in 1982 from the same university.
She then became a research student there and went on to obtain her PhD.
He obtained a PhD on the basis of his published works in 1996.
He graduated in four years and obtained a PhD at 23.
He obtained his PhD, and worked there until 1918 as a scientist.
The fourth student went on for graduate studies and obtained a PhD.
When the revolution failed, he returned to university and obtained a PhD in political science.
He later went on to obtain his PhD in physics at the same institution.
Ten graduate students obtained their PhD under her supervision between 2006 and 2010.
