1. Metropolitan Center of Research T.A.B.O.R; The Metropolitanate of Moldavia and Bukovina; Closca 9 Iasi RO-700066 Romania
2. INCDTP- Branch Leather-Footwear Research Institute; Ion Minulescu 93, 3rd Sector Bucharest Romania
3. Petru Poni Institute of Macromolecular Chemistry of the Romanian Academy; Aleea Grigore Ghica Voda 41A RO-700487 Iasi Romania