Circular economy: barrier and opportunities for SMEsNi Putu Santi Suryantini, I Wayan Edi Arsawan, Ni Putu Ayu Darmayanti, Svitlana Moskalenko and Tetiana GorokhovaE3S Web Conf., 255 (2021) 01017DOI: https://doi.org/10.1051/e3sconf/202125501017