Geodesic
Semidirect sums of Lie algebras
Matematičeskie zametki, Tome 18 (1975) no. 1, pp. 31-40 
A. L. Onishchik; Yu. B. Khakimdzhanov. Semidirect sums of Lie algebras. Matematičeskie zametki, Tome 18 (1975) no. 1, pp. 31-40. http://geodesic.mathdoc.fr/item/MZM_1975_18_1_a4/
@article{MZM_1975_18_1_a4,
     author = {A. L. Onishchik and Yu. B. Khakimdzhanov},
     title = {Semidirect sums of {Lie} algebras},
     journal = {Matemati\v{c}eskie zametki},
     pages = {31--40},
     year = {1975},
     volume = {18},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1975_18_1_a4/}
}
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Voir la notice de l'article provenant de la source Math-Net.Ru

This paper examines the problem of classifying finite-dimensional Lie algebras over the field $C$ with a given radical $\mathfrak{r}$ and also the problem of classifying algebraic Lie algebras with a given nilpotent radical $\mathfrak{r}$. A detailed study is made of the case when $\mathfrak{r}$ is the nilpotent radical of a parabolic subalgebra of a semisimple Lie algebra.