Kaiser, S.; Sziranyi, J.; Groß, D. (2019). "[The hepatopathologist Hans Popper (1903-1988) : An early victim of National Socialism in Austria. German version]". Der Pathologe. 40 (4): 457–466. doi:10.1007/s00292-019-0617-0. ISSN1432-1963. PMID31165235.
Kaiser, S.; Sziranyi, J.; Groß, D. (2019). "[The hepatopathologist Hans Popper (1903-1988) : An early victim of National Socialism in Austria. German version]". Der Pathologe. 40 (4): 457–466. doi:10.1007/s00292-019-0617-0. ISSN1432-1963. PMID31165235.
Kaiser, S.; Sziranyi, J.; Groß, D. (2019). "[The hepatopathologist Hans Popper (1903-1988) : An early victim of National Socialism in Austria. German version]". Der Pathologe. 40 (4): 457–466. doi:10.1007/s00292-019-0617-0. ISSN1432-1963. PMID31165235.