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1- The Chemistry of Heterocyclic Compounds, Volume 5, Pyridazine and Pyrazine Rings
By J. C. Simpson
ISBN: 978-0-470-37620-1
http://onlinelibrary.wiley.com/book...-14+GMT+(06-10+EDT)+for+essential+maintenance
2- Chemistry of Heterocyclic Compounds: Condensed Pyrazines, Volume 35
By G. W. H. Cheeseman , R. F. Cookson
DOI: 10.1002/9780470187333.fmatter
http://onlinelibrary.wiley.com/doi/10.1002/9780470187333.fmatter/summary
By J. C. Simpson
ISBN: 978-0-470-37620-1
http://onlinelibrary.wiley.com/book...-14+GMT+(06-10+EDT)+for+essential+maintenance
2- Chemistry of Heterocyclic Compounds: Condensed Pyrazines, Volume 35
By G. W. H. Cheeseman , R. F. Cookson
DOI: 10.1002/9780470187333.fmatter
http://onlinelibrary.wiley.com/doi/10.1002/9780470187333.fmatter/summary