1. Classification of bladder tumours based on the cellular pattern;Bergkvist;Acta Chir. Scand.,1965
2. Diagnostic cytology by an extended membrane filter technique;Fischer;Acta path. microbiol. scand.,1970
3. Cytologic evaluation of transitional cell carcinoma of the bladder;Kern;J. Urol.,1968
4. Heat fractionation of urine lactic acid dehydrogenase and combined cytopathologic evaluation in the diagnoses of cancer in the urinary tract;Kern;J. Urol.,1966