James Beardsley, "Constitutional Review in France", The Supreme Court Review, Vol. 1975, (1975), pp. 189–259
Michael H. Davis, The Law/Politics Distinction, the French Conseil Constitutionnel, and the U. S. Supreme Court, The American Journal of Comparative Law, Vol. 34, No. 1 (Winter, 1986), pp. 45–92
Denis Tallon, John N. Hazard, George A. Bermann, The Constitution and the Courts in France, The American Journal of Comparative Law, Vol. 27, No. 4 (Autumn, 1979), pp. 567–587
Marcel Waline, The Constitutional Council of the French Republic, The American Journal of Comparative Law, Vol. 12, No. 4 (Autumn, 1963), pp. 483–493 lists reasons for the Council to be considered as a court: "If it be admitted that a judicial authority is characterized by the effect of res judicata attaching to its decisions, it must necessarily be concluded that the Constitutional Council is a court, and even the supreme court of the State."
Tony Prosser, Constitutions and Political Economy: The Privatisation of Public Enterprises in France and Great Britain, The Modern Law Review, Vol. 53, No. 3 (May 1990), pp. 304–320; see p. 307 "The number of references has steadily grown; it is no
exaggeration to claim that any important controversial legislation is now likely to be referred."
legifrance.gouv.fr
Ordonnance n°58-1067 du 7 novembre 1958 portant loi organique sur le Conseil constitutionnel ("Ordinance 58-1067 of 7 November 1958, organic bill on the Constitutional council"). About swearing-in: article 3 says Avant d'entrer en fonction, les membres nommés du Conseil constitutionnel prêtent serment devant le Président de la République. ("Before assuming their duties, the appointed members of the Constitutional council are sworn in before the President of the Republic.")