1. C. I. Simionescu, V. Percec and Sv. Dumitrescu, J. Polym. Sci., Polym. Chem. Ed., 15, 2497(1977)
2. C. I. Simionescu, Sv. Dumitrescu, V. Percec and M. Grigoras, Rev. Roum. Chim., 22, 1105(1977)
3. Sv. Dumitrescu, V. Percec and C. I. Simionescu, Rev. Roum. Chim., 23, 1303(1978)
4. V. Percec, G. Ioanid, Sv. Dumitrescu and C. I. Simionescu, Plaste. Kautch., 25, 222(1978)
5. C. I. Simionescu, Sv. Dumitrescu and V. Percec, J. Polym. Sci., Polym. Symp., 64, 209(1978)