Plastične mase – Simboli i skraćenice – Deo 1: Osnovni polimeri i njihove posebne karakteristike – Izmena 1: Novi simbol ST za sindiotaktik
Plastics - Symbols and abbreviated terms - Part 1: Basic polymers and their special characteristics - Amendment 1: New symbol ST for syndiotactic (ISO 1043-1:2011/Amd 1:2016)