[1] ABRAHAM R., ROBBIN J.: 
Transversal mappings and flows. W. A. Benjamin, N. Y. - Amsterdam, 1967. 
MR 0240836 | 
Zbl 0171.44404 
[2] BLOCK R. E.: 
On the extensions of Lie algebras. Canad. J. Math. 20, 1988, 1439-1450. 
MR 0235001 
[3] HATTORI A.: 
On high order derivations from the viewpoint of two-sided modules. Scient Papers Coll. Gen. Educ. Univ. Tokyo 20, 1970, 1-11. 
MR 0271160