Other Professional Activities:
Visiting Professor at the Faculty of Social and Human Sciences and the Faculty of Law of the Portuguese Catholic University, the Faculty of Economics of the New University of Lisbon, the Faculty of Law of the University of Porto and the Instituto Superior Técnico.
Jurisconsult.
Chairman of the Board of Directors of the Casa de Bragança Foundation.

Most relevant publications:
Constitutional Law I-Theory of the Constitution, 1979;

Political Parties in Portuguese Constitutional Law, 1983;

The legal value of the unconstitutional act, 1988;

Privatisation and the Constitution, 1991;

The Portuguese System of Government, 3rd edition, 1992;

The public tender in the formation of the administrative contract, 1994;

Lessons in Administrative Law, I, 1999;

Introduction to the Study of Law, 5th edition, 2000, with Sofia Galvão;

General Administrative Law, I, reprint of 3rd edition, 2014. With André Salgado de Matos;

General Administrative Law,III, reprinted from 2nd ed. 2014. With André Salgado de Matos.