Sabara, D. M.; Dunne, J. S.; Pedro, A. Q.; Trifunović, J.; Balogun5. I.; Kotlicic, O.; Serrano, A.; Kertész, I. Spectroscopic Studies of Naproxen and Tryptophan Immobilized in Polyvinyl Alcohol. BFS 2011, 75, 39-49.