„Urbán János (matematikus)” változatai közötti eltérés

* {{cite book|last = Magyar Távirati Iroda Zrt.|first = |authorlink = |coauthors = | editor = Hermann Péter|others = Bognár Anna, Török Zsuzsanna|title = MTI Ki kicsoda 2009|origdate = 2008|origyear = |origmonth = | url = | format = | accessdate = | accessyear = | accessmonth = | edition = | date = | year = 2008 | month = | publisher = Magyar Távirati Iroda | location = | language = | id = ISBN 978 -963 -178 -728 -3 | doi = | pages = 1141 | chapter = | chapterurl = | quote = }}