Retraction notices

The Construction of the Paperless English Test Answering System in University Based on Computer Technology

Type
Retraction
Notice date
9/16/2022 0:00
Journal
Journal of Physics: Conference Series
Publisher
IOP Publishing
Notice DOI
10.1088/1742-6596/1648/2/022225
Original paper DOI
10.1088/1742-6596/1648/2/022121

Reasons