1. Look, A.T., Ashmun, R.A., Shapiro, L.H., O'Connel, P.J., Gerkis, V., D'Apice, A., Sagawa, J. and Peiper, S.C. (1989) In: Leukocyte Typing IV. White Cell Differentiation Antigens, pp. 784–787, Oxford Univ. Press, Oxford.
2. Kenny, A.J. and Turner, A.J. (1987) Mammalian ectoenzymes. In: Research monographs in cell and tissue physiology. Vol. 14, Elsevier, Amsterdam.
3. Shipp, M.A. and Look, A.T. (1993) Blood 82, 1052–1070.
4. Hoffmann, T., Faust, J., Neubert, K. and Ansorge, S. (1993) FEBS Lett. 336, 61–64.
5. Noren, O., Sjöström, H., Danielsen, E.M., Cowel, G.M., Skovbjierg, H. in: Desnuelle, P., Sjöström, H. and Olsen, O. (1986) Molecular and Cellular Basis of Digestion, Amsterdam, p. 335, Elsevier, Amsterdam.