@article{MM2_1997__93_4_156289,
     author = {Pu Zhang},
     title = {A criterion for quasi-heredity and the characteristic module.},
     journal = {Manuscripta mathematica},
     pages = {129--136},
     publisher = {mathdoc},
     volume = {93},
     number = {4},
     year = {1997},
     zbl = {0884.16009},
     url = {http://geodesic.mathdoc.fr/item/MM2_1997__93_4_156289/}
}