The Chemistry of Heterocyclic Compounds, Heterocyclic Derivatives of Phosphorous, Arsenic, Antimony and Bismuth, Arnold Weissberger 
Special Topics in Heterocyclic Chemistry, Arnold Weissberger 
The Chemistry of Heterocyclic Compounds, Five Member Heterocyclic Compounds with Nitrogen and Sulfur or Nitrogen, Sulfur and Oxygen Except Thiazole, Arnold Weissberger