1. Adolphe, W. E., R. T. Baker and G. M. Leiby: Electron microscope studies of epidermal fibres. Science (Lancaster, Pa.) 118, 685?686 (1951).
2. Albertini, A. v.: Pflasterepithelzellen im Phasenkontrastbild. Acta anat. (Basel) 1, 436?466 (1946).
3. ?: Electron microscopic study of epidermal carcinoma induced by methylcholanthrene in the mouse. J. Nat. Cancer Inst. 13, 1473?1495 (1953).
4. Biedermann, W.: Vergleichende Physiologie des Integuments der Wirbeltiere. I. Histiophysiologie der typischen Hautgewebe. Erg. Biol. 1, 1?342 (1926).
5. Birbeck, M.S.C., and E. H. Mercer: The rôle of cell membranes in morphogenesis. Electronmicroscopy, Proc. Stockholm Conf. Sept. 1956, S. 156/2-158.