He frequently referred to the students when they were at College, and for long after, as his 'children'.
He has been frequently referred to as a child soldier.
My father frequently referred to himself and others as Irish.
She is also frequently referred to in popular writing or talks on the history of the period.
It is frequently referred to, when you understand the equations.
The protein product is still frequently referred to as Brn3a.
In particular, commissioner frequently refers to senior police or government officials.
Media reports frequently refer to this area when they cover stories about real estate.
But he frequently referred to the cinema in his work for press and radio.
He is frequently referred to as the "father of the computer" for this achievement.