1. Johannes Diderik van der Waals
2. bJohannes Diderik van der Waals – Biographical.http://www.nobelprize.org/nobel_prizes/physics/laureates/1910/waals-bio.html(accessed Oct 2013) .
3. cJohannes Diderik van der Waals,http://en.wikipedia.org/wiki/Johannes_Diderik_van_der_Waals(accessed Oct 2013) .
4. Moelwyn-Hughes, E. A.Physical Chemistry,2nd corrected ed.The Macmillan Co.:Oxford, 1964; p594et seq.
5. Emsley, J.The Elements,3rd ed., 2nd reprint;Oxford University Press:Oxford, U.K., 2000; p3.