@book{Ackermann+1985,
url = {https://doi.org/10.3790/9783428458790},
title = {Die Rückgewährquote der Lebensversicherungsunternehmen},
title = {},
author = {Peter Ackermann},
publisher = {Duncker & Humblot},
address = {},
doi = {doi:10.3790/9783428458790},
isbn = {9783428458790},
year = {1985},
lastchecked = {1985}
}