James, Allison G.: Maintenance of Equilibrium in Reversible Hydrocolloid Impressions. I. Made With Stock Impression Materials, J. D. Res. 28: 108, 1949.
2.
James, Allison G.: Maintenance of Equilibrium in Reversible Hydrocolloid Impressions. II. Made With Materials Supplied by the Manufacturers for Testing, J. D. Res. 28: 119, 1949.