@article{Kwak_Oh_Jeong_Shin_Ku_Lee_2021, title={Changes in Shared Bicycle Usage by COVID-19}, volume={89}, url={https://www.cetjournal.it/index.php/cet/article/view/CET2189029}, DOI={10.3303/CET2189029}, journal={Chemical Engineering Transactions}, author={Kwak, Juhyeon and Oh, Haram and Jeong, Ilho and Shin, Seungheon and Ku, Donggyun and Lee, Seungjae}, year={2021}, month={Dec.}, pages={169-174}