@book
{TN_libero_mab2,
author = {
Steffensen, Johan Frederik
},
title = {
On the problem of three bodies in the plane
},
publisher = {Munksgaard [in Komm.]},
keywords = {
Three-body problem
},
year = {1957},
booktitle = {Matematisk-fysiske meddelelser ; 31,3},
address = {
København
},
url = {
http://slubdd.de/katalog?TN_libero_mab2
}
}