Geodesic
Finite unsolvable nonsimple $(A)$-groups
Matematičeskie zametki, Tome 10 (1971) no. 2, pp. 163-168.

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The article gives a classification of finite unsolvable nonsimple groups satisfying the following condition (A): the intersection of any two nonincident subgroups of even order is Abelian. 
@article{MZM_1971_10_2_a5,
     author = {V. I. Chaadaev},
     title = {Finite unsolvable nonsimple $(A)$-groups},
     journal = {Matemati\v{c}eskie zametki},
     pages = {163--168},
     publisher = {mathdoc},
     volume = {10},
     number = {2},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1971_10_2_a5/}
}
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V. I. Chaadaev. Finite unsolvable nonsimple $(A)$-groups. Matematičeskie zametki, Tome 10 (1971) no. 2, pp. 163-168. http://geodesic.mathdoc.fr/item/MZM_1971_10_2_a5/