Manos Gkikas Hermis Iatrou Nikolaos S. Thomaidis Paschalis Alexandridis Nikos Hadjichristidis, Well-Defined Homopolypeptides, Copolypeptides, and Hybrids of Poly(l-proline), Biomacromolecules, (12), 2396--2406, 2011, American Chemical Society (ACS), 1525-7797, 1526-4602