1. On the topological structure of solvable groups;Chevalley;Ann. Math.,1941
2. Cohomology in Lie groups and Lie algebras;Chevalley;Trans. Am. Math. Soc.,1948
3. Cohomology in abstract groups;Ellenberg;Ann. Math.,1947
4. Dense imbeddings of Lie groups;Est;Proc. Kon. Ned. Akad. v. Wetensch., Amsterdam,1951
5. Dense imbeddings of Lie groups II;Est;Proc. Kon. Ned. Akad. v. Wetensch., Amsterdam,1952