* Steibart H., Studies on Clara Fonti's hematological diagnosis of cancer. Med Klin (München) 1956 Mar 2;51(9):352-3.
* Steibart H., Studies on Clara Fonti's hematological diagnosis of cancer. Med Klin (München) 1956 Mar 2;51(9):352-3.
* Krüger HU, Results of testing Fonti's hematological cancer diagnosis. Dtsch Gesundheitsw. 1956 Apr 12;11(15):487-90.
* Krüger HU, Results of testing Fonti's hematological cancer diagnosis. Dtsch Gesundheitsw. 1956 Apr 12;11(15):487-90.
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* Stiller-Winkler R, Kuchciński R. Practical value of Bolen's and Fonti's tests in the oncologic diagnosis. Wiad Lek. 1966 Mar 15;19(6):481-6. (polnisch)