The fellow who is able to get the grants and contracts is the fellow who gets the doctoral students. Each student publishes two or three papers on his thesis, in each of which he cites his professor's work. Then he goes on and does his own subsequent work, in which, of course, he cites those thesis papers which were coauthorised by his professor.

Robert Machol in: "Now it is to be cited or perish." New Scientist. Vol. 67, nr. 964. August 28, 1974. p. 491