TY  - BOOK
AU  - Goodchild,Michael
AU  - Guoqing,Sun
AU  - Shiren,Yang
TI  - Development and test of and error model for categorical data
UR  - https://drive.google.com/file/d/1XmEqfnOGPGc0ROh109jADGzHFDddMeA6/view?usp=drivesdk
ER  -