Überlegungen zu Hans Kelsens “allgemeine theorie der normen” by Kazimierz Opalek. “Schriftenreihe Des Hans Kelsen-instituts,” volume 4. vienna: Manz verlag, 1980., And untersuchungen zur stufenbaulehre Adolf merkls und Hans Kelsen. By Jürgen behrend. “Schriften zur rilchtstheorie,” volume 65. Berlin: Duncker & humblot, 1977 [Book Review]

In jurisprudential circles the year 1981 might well be dubbed the year of Hans Kelsen, with no fewer than three symposia celebrating the hundredth anniversary of his birth. The Association for Legal and Social Philosophy in the United Kingdom held a conference on Kelsen in Edinburgh in April, giving special attention to “legal epistemology” in the Pure Theory of Law. A symposium of the Austrian Association for Legal and Social Philosophy, held in the Schloss Retzhof near Graz in May, was devoted to Kelsen's political theory and critique of ideology. And the Hans Kelsen Institute in Vienna sponsored a symposium in September on Kelsen's posthumously published work, the Allgemeine Theorie der Normen. All three events were marked by significant international participation, and they point to continuing widespread interest in Kelsen and the Pure Theory of Law