1. G. R. Desiraju , Crystal Engineering. The Design of Organic Solids, Elsevier,Amsterdam, 1989
2. L. Pauling . The Nature of the Chemical Bond, Cornell University Press, New York, 3rd ed., 1960
3. E. P. Serjeant , B.Dempsey, Ionization Constants of Organic Acids in Aqueous Solutions, Pergamon Press, Oxford, 1979
4. Organic salts ofL-tartaric acid: materials for second harmonic generation with a crystal structure governed by an anionic hydrogen-bonded network