Reviewer's Report (with Covering Letters) by L.Trilling on N.Magnenat-Thalmann's and D.Thalmann's paper. Date: 12.02.1980- 27.02.1980 Original document language: English Authors: L. Trilling Organizations: IFIP Persons: Nadia Magnenat-Thalmann, D. Thalmann Addressee: Andrei Petrovich Ershov