1. The synthesis and properties of 2,3,23(22),24-tetrahydro-21H-biline-1,19-diones, model systems for biliprotein chromophores: 2,3,23(22),24-tetrahydro-17,18-dimethyl-21H-biline-1,19-dione and its (4E)-21-methyl, (4Z + 4E)-22-methyl, (9Z + 9E)-23-methyl, (4;Recueil des Travaux Chimiques des Pays-Bas;2010-09-02
2. The synthesis, properties and reactivity of model systems for protonated chromophores in biliproteins;Recueil des Travaux Chimiques des Pays-Bas;2010-09-02
3. Synthesis and spectroscopic study of 1,1′-methylene-2,2′-pyrromethen-5[1H]-one and its 3,4-dihydro and 2,3,4,6-tetrahydro derivative;Recueil des Travaux Chimiques des Pays-Bas;2010-09-02
4. DIPYRRINONES-CONSTITUENTS OF THE PIGMENTS OF LIFE. A REVIEW;Organic Preparations and Procedures International;2006-08
5. ChemInform Abstract: 3,4-DIHYDRO-2,2′-PYRROMETHEN-5(1H)-ONES; SYNTHESIS AND PHOTOCHEMICAL REACTIVITY;Chemischer Informationsdienst;1985-07-16