@incollection{WeinertSchneider1993,
  author    = {Weinert, Franz E. and Schneider, Wolfgang},
  title     = {Cognitive, social and emotional development},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-87448},
  publisher      = {Universit{\"a}t W{\"u}rzburg},
  year      = {1993},
  abstract  = {No abstract available.},
  subject      = {Identit{\"a}tsentwicklung},
  language  = {en}
}
@incollection{Schneider1993,
  author    = {Schneider, Wolfgang},
  title     = {The longitudinal study of motor development: methodological issues},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-71393},
  publisher      = {Universit{\"a}t W{\"u}rzburg},
  year      = {1993},
  abstract  = {No abstract available.},
  subject      = {Motorische Entwicklung},
  language  = {en}
}