Arthofer, E., Dijksterhuis, J., Hot, B., Kozielewicz, P., Lauth, M., Olofsson, J., Petersen, J., Polonio, T., Schulte, G., Strakova, K., Valnohova, J. and Wright, S. (2021) “Class Frizzled GPCRs in GtoPdb v.2021.3”, IUPHAR/BPS Guide to Pharmacology CITE, 2021(3). doi: 10.2218/gtopdb/F25/2021.3.