@article{PUIM_2000__2000_88_255796,
     author = {Seymour Lipschutz and Wujie Shi},
     title = {Note on a question of {Reinhold} {Baer} on pregroups},
     journal = {Publications de l 'Institut Math\'ematique},
     pages = {53},
     publisher = {mathdoc},
     volume = {2000},
     number = {88},
     year = {2000},
     zbl = {1011.20002},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/item/PUIM_2000__2000_88_255796/}
}