Lehrl, Simone; Kluczniok, Katharina; Roßbach, Hans-Günther (2016): Longer-term associations of preschool education: The predictive role of preschool quality for the development of mathematical skills through elementary school, in: Early childhood research quarterly : the scholarly journal of the National Association for the Education of Young Children (NAEYC), Amsterdam [u.a.]: Elsevier Science, Jg. 36, Nr. 3rd Quarter, S. 475–488, doi: 10.1016/j.ecresq.2016.01.013.