Eberhard Heymann

Isolation and characterization of dipeptidyl peptidase IV from human placenta.

G. Püschel, R. Mentlein, E. Heymann, 1982, European journal of biochemistry.

The degradation of bioactive peptides and proteins by dipeptidyl peptidase IV from human placenta.

R. Mentlein, E. Heymann, I. Nausch, 1990, Biological chemistry Hoppe-Seyler.