@misc
{TN_libero_mab2,
author = {
Wold, Herman
},
title = {
Causal Inference from Observational Data: A Review of End and Means
},
publisher = {Royal Statistical Society},
isbn = {0035-9238},
year = {1956},
url = {
http://slubdd.de/katalog?TN_libero_mab2
}
}