1. Criminal Code: Articles 419-431, 439, 441, 442, Title XIII, Chapter XI, Section 4 – Corruption in Business, Articles 31bis-31quinquies
   (Codigo Penal: Artículos 419-431, 439, 441, 442, Titulo XIII, Сapítulo XI, Sección 4 – Delitos de corrupción en los negocios, Artículos 31bis-31quinquies​), (Spanish);

2. Law on Civil Service, Division III, Chapter VIII
   (Ley articulada de Funcionarios Civiles del Estado: Titulo III, Capitulo VIII), (Spanish);

3. Organic Law of December 26, 1984 No. 53/1984 «On Restrictions on Part-Time Work on Civil Servants»
   (Ley Orgánica 53/84, de 26 de diciembre, de Incompatibilidades del personal al servicio de las Administraciones Públicas), (Spanish);

4. Law of March 30, 2015 «On the Duties of Persons Occupying Highest Positions in Public Administration»
   (Ley 3/2015, de 30 de marzo, reguladora del ejercicio del alto cargo de la Administración General del Estado), (Spanish).

1. Criminal Code: Articles 246-250, 504bis, 504ter
(Wetboek van Strafrecht: Art. 246-250, 504bis, 504ter), (Dutch);

2. Law of September 15, 2013 «On the Disclosure of Information on Alleged Violation of the Rules of Conduct for Public Officials»
(Wet van 15 septembre 2013, beteffende de melding van een verondestelde integriteitsschending in de federale administratieve overheden door haar personeelsleden), (Dutch);

3. Circular of May 5, 2014 «On the Management of Conflicts of Interest in Public Procurement: "Revolving Door"»
(Omzendbrief 5 mei 2014 - Overheidsopdrachten - Belangenvermenging – Draaideurconstructie), (Dutch);

4. The Code of Ethics for Federal Public Officials
(Deontologisch Kader), (Dutch).

1. Special Prosecutor’s Office for Countering Corruption and Organized Crime
   (Fiscalía Especial contra la Corrupción y el Crimen Organizado), (Spanish)

1. Central Bureau for Countering Corruption, Federal Police of Belgium
   (Office Central pour la Répression de la Corruption), (Dutch/French);
2. Federal Prosecutor's Office
   (Federaal parket), (Dutch/French).