1. Petru Poni Institute of Macromolecular Chemistry
2. 700487 Iasi
3. Romania
4. Department of Chemical Engineering
5. Gheorghe Asachi Technical University of Iasi
6. 700050 Iasi
7. Technological Institute of Construction Marble Technical Unit (AIDICO)
8. 03660 Novelda-Alicante
9. Spain