Application barriers and the socioeconomic gap in child care enrollment / Henning Hermes (ifo Institute and IZA), Philipp Lergetporer (Technical University of Munich, TUM School of Management and IZA), Frauke Peter (German Centre for Higher Education Research and Science Studies (DZHW), Simon Wiederhold (Halle Institute for Economic Research (IWH), Halle University and IZA) ; IZA Institute of Labor Economics