Kalnoor, Basanth S Mixed β-pyrrole substituted meso-tetraphenylporphyrins and their metal complexes: optical nonlinearity using degenerate four wave mixing technique. [electronic resource] - The journal of physical chemistry. A Aug 2013 - 8216-21 p. digital Publication Type: Journal Article ISSN: 1520-5215 Standard No.: 10.1021/jp404451x doi