1. H. Gradl. Realization of semisimple Lie algebras with polynomial and rational vector fields. Comm. Algebra.
2. S. Helgason. Differential Geometry and Symmetric Spaces. Academic Press, 1962.
3. I. L. Kantor. Models of exceptional Lie algebras. Soviet Math. Dokl., 14:254–258, 1973.
4. M. Koecher. Imbedding of Jordan algebras into Lie algebras I. Amer. J. Math., 89:787–816, 1967.
5. M. Koecher. Gruppen und Lie-Algebren von rationalen Funktionen. Math. Z., 109:349–392, 1969.