offence established in accordance with this Convention, committed for their benefit by any natural person, acting either individually or as part of an organ of the legal person, who has a leading position within it, based on: a a power of representation of the legal person; b an authority to take decisions on behalf of the legal person; c an authority to exercise control within the legal person. 2 In addition to the cases already provided for in paragraph 1 of this article, each Party shall take the measures necessary to ensure that a legal person can be held liable where the lack of supervision or control by a natural person referred to in paragraph 1 has made possible the commission of a criminal offence established in accordance with this Convention for the benefit of that legal person by a natural person acting under its authority. 3 Subject to the legal principles of the Party, the liability of a legal person may be criminal, civil or administrative. 4 Such liability shall be without prejudice to the criminal liability of the natural persons who have committed the offence. Article 13 – Sanctions and measures 1 Each Party shall adopt such legislative and other measures as may be necessary to ensure that the criminal offences established in accordance with Articles 2 through 11 are punishable by effective, proportionate and dissuasive sanctions, which include deprivation of liberty. 2 Each Party shall ensure that legal persons held liable in accordance with Article 12 shall be subject to effective, proportionate and dissuasive criminal or non-criminal sanctions or measures, including monetary sanctions. Section 2 – Procedural law Title 1 – Common provisions Article 14 – Scope of procedural provisions 1 Each Party shall adopt such legislative and other measures as may be necessary to establish the powers and procedures provided for in this section for the purpose of specific criminal investigations or proceedings. 2 Except as specifically provided otherwise in Article 21, each Party shall apply the powers and procedures referred to in paragraph 1 of this article to: 41