1. a 'Petru Poni' Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda No. 41A, RO-6600 Romania
2. b 'Petru Poni' Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda No. 41A, RO-6600 Romania
3. c 'Petru Poni' Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda No. 41A, RO-6600 Romania
4. d 'Petru Poni' Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda No. 41A, RO-6600 Romania
5. e 'Petru Poni' Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda No. 41A, RO-6600 Romania
6. f 'Petru Poni' Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda No. 41A, RO-6600 Romania