(en) Antonio Cardesa, Nina Zidar, Llucia Alos, Alfons Nadal, Nina Gale, Günter Klöppel, « The Kaiser's cancer revisited: was Virchow totally wrong? », Virchows Archiv: an international journal of pathology, vol. 458, no 6, , p. 649-657. (ISSN1432-2307, PMID21494762, DOI10.1007/s00428-011-1075-0)
(en) Antonio Cardesa, Nina Zidar, Llucia Alos, Alfons Nadal, Nina Gale, Günter Klöppel, « The Kaiser's cancer revisited: was Virchow totally wrong? », Virchows Archiv: an international journal of pathology, vol. 458, no 6, , p. 649-657. (ISSN1432-2307, PMID21494762, DOI10.1007/s00428-011-1075-0)
(en) Antonio Cardesa, Nina Zidar, Llucia Alos, Alfons Nadal, Nina Gale, Günter Klöppel, « The Kaiser's cancer revisited: was Virchow totally wrong? », Virchows Archiv: an international journal of pathology, vol. 458, no 6, , p. 649-657. (ISSN1432-2307, PMID21494762, DOI10.1007/s00428-011-1075-0)