About JAKOBS A
About Univ. Liege, Liege, BEL
About CHRISTIAENS L
About Univ. Liege, Liege, BEL
About RENSON M
About Univ. Liege, Liege, BEL
About Bulletin des Societes Chimiques Belges
About polynuclear aromatic compound
About benzothiopyrans
About Condensed derivatives of thiophenes
About Thiopyrans
About Other 5-membered rings with one hetero atom
About Other 5-membered rings with two or more hetero atoms
About Other 6-membered rings with one hetero atom
About 硫黄
About セレン
About 類似体