@article{10_21136_CMJ_2017_0542_16,
     author = {Guo, Pengfei and Liu, Jianjun},
     title = {Finite groups whose all proper subgroups are $\mathcal {C}$-groups},
     journal = {Czechoslovak Mathematical Journal},
     pages = {513--522},
     publisher = {mathdoc},
     volume = {68},
     number = {2},
     year = {2018},
     doi = {10.21136/CMJ.2017.0542-16},
     mrnumber = {3819188},
     zbl = {06890387},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.2017.0542-16/}
}