(a) Informing the latter authorities, on their own initiative, where there are reasonable grounds to believe that any of the offences established in accordance with articles 15, 21 and 23 of this Convention has been committed; or (b) Providing, upon request, to the latter authorities all necessary information. Article 39. Cooperation between national authorities and the private sector 1. Each State Party shall take such measures as may be necessary to encourage, in accordance with its domestic law, cooperation between national investigating and prosecuting authorities and entities of the private sector, in particular financial institutions, relating to matters involving the commission of offences established in accordance with this Convention. 2. Each State Party shall consider encouraging its nationals and other persons with a habitual residence in its territory to report to the national investigating and prosecuting authorities the commission of an offence established in accordance with this Convention. Article 40. Bank secrecy Each State Party shall ensure that, in the case of domestic criminal investigations of offences established in accordance with this Convention, there are appropriate mechanisms available within its domestic legal system to overcome obstacles that may arise out of the application of bank secrecy laws. Article 41. Criminal record Each State Party may adopt such legislative or other measures as may be necessary to take into consideration, under such terms as and for the purpose that it deems appropriate, any previous conviction in another State of an alleged offender for the purpose of using such information in criminal proceedings relating to an offence established in accordance with this Convention. Article 42. Jurisdiction 1. Each State Party shall adopt such measures as may be necessary to establish its jurisdiction over the offences established in accordance with this Convention when: 28