Volumetric Properties of Glycine in Aqueous Urea,Monomethylurea,Dimethylurea Solutions 
Shao Shuang;Lin Xiao-Mei;Yang Fang-Ping;Hu Xin-Gen;Lin Rui-Sen
Acta Phys. -Chim. Sin. . 2002, (07): 595 -599 .  DOI: 10.3866/PKU.WHXB20020705