TY  - DATA
AU  - Olaf Zawacki-Richter
AU  -  Insung Jung
TI  - "Handbook of Open, Distance and Digital Education"
SN  - 9789811920806
PB  - Springer
KW  - Mathematics and Statistics
UR  - https://link.springer.com/openurl?genre=book&isbn=978-981-19-2080-6
ER  -