Jans, J. H. (2000). Proportionality Revisited. Legal Issues of Economic Integration, 27(3), 239-265.
Jans, J. H. (2000). The Habitats Directive; case note, High Court, Queen's Bench Division, MauriceKay J, 5 november 1999, Regina v. Secretary of State for Trade and Industry ex parte Greenpeace.Journal of environmental law, 12(3), 385-390.
Jans, J. H. (1999). HvJEG (Hermes). C-53/96. Case note on: HvJEG, 1/01/00Sociaal-economische Wetgeving : Tijdschrift voor Europees en Economisch Recht, 1999(5).
Jans, J. H. (1999). ECJ (Deense bijen). Case note on: ECJ, 3/12/98, C-67/97, ECLI:EU:C:1998:584 Milieu & Recht, 1999(11), 29.
Jans, J. H. (1999). ABRvS (Rode eekhoorns). Case note on: ABRvS, 18/06/98Milieu & Recht, 1999(12).
Jans, J. H. (1999). ABRvS. 62. Case note on: ABRvS, 27/04/99Milieu & Recht, 1999(7/8).
Jans, J. H. (1999). HvJEG. 73. Case note on: HvJEG, 25/02/99Milieu & Recht, 1999(9).
Jans, J. H. (1999). HR (Roodvoorhoofdkanaries). Case note on: HR, 15/12/99Milieu & Recht, 1999(5).
Jans, J. H. (1999). HvJ (SBZ's Vogelrichtlijn). 63. Case note on: HvJ, 1/01/00Milieu & Recht, 1999(7/8).
Jans, J. H. (1999). ABRvS. 63. Case note on: ABRvS, 28/01/99Milieu & Recht, 1999(9).