@book{Burkhardt+Müller+1985,
url = {https://doi.org/10.3790/9783428459438},
title = {Grundprobleme einer umfassenden Invaliditätssicherung},
title = {},
author = {Wilfried BurkhardtJ. Heinz Müller},
publisher = {Duncker & Humblot},
address = {},
doi = {doi:10.3790/9783428459438},
isbn = {9783428459438},
year = {1985},
lastchecked = {1985}
}