[1]董桂真.整数环上线性方程组有解的充要条件[J].济南大学学报(综合版),1997,{4}(03):59-61.

Dong Guizhen. A SUFFICIENT AND NECESSARY CONDITION THAT LINEAR EQUATIONS SYSTEM WITH INTEGRAL COEFFICIENT HAS INTEGRAL SOLUTION[J]. Journal of University of Jinan(Social Science Edition), 1997,(3):59-61.

[1]董桂真.整数环上线性方程组有解的充要条件[J].济南大学学报(综合版),1997,{4}(03):59-61. DOI：

Dong Guizhen. A SUFFICIENT AND NECESSARY CONDITION THAT LINEAR EQUATIONS SYSTEM WITH INTEGRAL COEFFICIENT HAS INTEGRAL SOLUTION[J]. Journal of University of Jinan(Social Science Edition), 1997,(3):59-61. DOI：