As a student of Paul Cohen's, I can tell you that he is a strong disciple of Rascher in several ways and looks to Raschers influence in:
Rascher's Impeccable Musicality
Rascher's Connection to Major Composers (Dahl, Martin, Glazounov, Ibert)
Rascher's Commitment to orchestral Saxophone sound as the instrument was intended to sound.
Although he only studied with Rascher during several brief times, I can say from observation that Dr. Cohen holds rascher to be a major influence.