no. 3
Soluble subideals of Lie algebras
Compositio Mathematica, Tome 25 (1972) no. 3, pp. 221-232. 
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     title = {Soluble subideals of {Lie} algebras},
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     volume = {25},
     number = {3},
     year = {1972},
     mrnumber = {318247},
     zbl = {0246.17013},
     language = {en},
     url = {http://archive.numdam.org/item/CM_1972__25_3_221_0/}
}
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Amayo, Ralph K. Soluble subideals of Lie algebras. Compositio Mathematica, Tome 25 (1972) no. 3, pp. 221-232. http://archive.numdam.org/item/CM_1972__25_3_221_0/

R.K. Amayo [1] Infinite dimensional Lie algebras. M. Sc. Thesis (1970) University of Warwick.

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I.N. Stewart [4] Lie algebras. Lecture Notes in Mathematics 127, Springer. Berlin, Heidelberg, New York (1970). | MR | Zbl

I.N. Stewart [5] An algebraic treatment of Malcev's theorems concerning nilpotent Lie groups and their Lie algebras. Compositio Mathematica, 22, 289-312 (1970). | Numdam | MR | Zbl

S.E. Stonehewer [6] The join of finitely many subnormal subgroups. Bull. London Math. Soc. 2, 77-82 (1970). | MR | Zbl