All published articles in the Green Chemistry & Technology Letters (GCTL) are archived at PKP-PLN by the virtue of being at OJS. 

MGES Journals supports the early sharing of research via preprint servers. Our authors are permitted to share a Preprint of their manuscript anywhere at any point in time. The advice authors not to transfer or assign copyright when sharing the Preprint, or make the Preprint available under any exclusive license. 

GCTL is a Sherpa Romeo Green Journal