About LENDEL V G
About PAK V J
About PETRUS V V
About KIYAK M YU
About MIGALINA YU V
About Khimiya Geterotsiklicheskikh Soedinenij
About chemical synthesis
About benzothiophenes
About Condensed derivatives of thiophenes
About Other 5-membered rings with one hetero atom
About フェン
About 誘導体