Linking the Value Assessment of Oil and Gas Firms to Ambidexterity Theory Using a Mixture of Normal DistributionsSébastien Casault, Aard J. Groen et Jonathan D. LintonOil Gas Sci. Technol. – Rev. IFP Energies nouvelles, 71 3 (2016) 36DOI: https://doi.org/10.2516/ogst/2015018