author = { Döring, Nicola AND Mikhailova, Veronika AND Brandenburg, Karlheinz AND Broll, Wolfgang AND Groß, Horst-Michael AND Werner, Stephan AND Raake, Alexander },

title = { Saying "Hi" to grandma in nine different ways established and innovative communication media in the grandparent-grandchild relationship },

publisher = {},

isbn = {2689-0208},

year = {2021},

address = { },

url = { http://slubdd.de/katalog?TN_libero_mab2 }