1. G. Burillo and T. Ogawa, Makromol. Chem. (Short Comm.), in press.
2. M. H. Jensen, P. A. King and R. Eikhof; Proceedings Tenth National Agricultural Plastics Conference: Nov. 2 – 4, 1971: Chicago, Illinois: J. W. Courter, Aditor; University of Illinois.
3. S. A. Yen, U. S. Patent 3,900,378 (1975) to Union Carbide Co. As a product of Union Carbide; Hydrogel Soil Amendment “Viterra”.
4. Synthesis of high molecular weight polyacrylamide flocculant by radiation polymerization