@inbook{Knudsen1998,
author = {Knudsen, L.B.},
title= {Abortudviklingen siden 1973},
year = {1998},
editor = {Petersson, B.},
editor = {Knudsen, L.B.},
editor = {Larsen, K.H.},
booktitle = {Abort i 25 år},
publisher = {Lindhardt and Ringhof},
}