@inbook{8470aaa6fb374d698e1acce9ba9bdbab,
title = "How can we prevent cream skimming in a competitive health insurance market?: The great challenge for the 90's",
author = "\{Van de Ven\}, \{W. P.\} and \{Van Vliet\}, \{R. C.\}",
year = "1992",
doi = "10.1007/978-94-011-2392-1\_2",
language = "English",
series = "Developments in health economics and public policy",
publisher = "Springer-Verlag",
pages = "23--46",
editor = "Peter Zweifel and H.E. FrechIII",
booktitle = "Health Economics Worldwide",
address = "Germany",
}