Moll, Franke, Schiller et al.: "The catalog of human cytokeratins: patterns of expression in normal epithelia, tumors and cultured cells." in: Cell, Vol. 31, Issue 1, pp. 11-24, 1983 (PubMed).
Gown, Vogel: "Monoclonal antibodies to human intermediate filament proteins. II. Distribution of filament proteins in normal human tissues." in: The American journal of pathology, Vol. 114, Issue 2, pp. 309-21, 1984 (PubMed).
Yang, Lecksell, Gaudin et al.: "Rare expression of high-molecular-weight cytokeratin in adenocarcinoma of the prostate gland: a study of 100 cases of metastatic and locally advanced prostate cancer." in: The American journal of surgical pathology, Vol. 23, Issue 2, pp. 147-52, 1999 (PubMed).