共 50 条
- [3] Socioeconomic differences in the reduction of face-to-face contacts in the first wave of the COVID-19 pandemic in Germany [J]. BMC Public Health, 22
- [10] Student Preference: ONLINE or Face-To-Face Instruction in a Year of COVID-19 [J]. 2021 IEEE FRONTIERS IN EDUCATION CONFERENCE (FIE 2021), 2021,