@bookHilleringmann_2018, title=The Influence of Bribery and Relative Reciprocity on a Physician’s Prescription Decision - An Experiment, publisher=CIE Working Paper Series, author=Hilleringmann, Vanessa, year=2018 

@bookHilleringmann_2018, title=Corruption in the health care sectorf: the influence of bribery and relative reciprocity on a physician’s prescription decision, author=Hilleringmann, Vanessa, year=2018