@article{SMZ_2006__47_1_53317,
     author = {Chernikov, N.S. and Dovzhenko, S.A.},
     title = {Groups all whose nonnormal subgroups generate a nontrivial proper subgroup.},
     journal = {Sibirskij Matematicheskij Zhurnal},
     pages = {211},
     publisher = {mathdoc},
     volume = {47},
     number = {1},
     year = {2006},
     zbl = {1118.20027},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/item/SMZ_2006__47_1_53317/}
}