The partners of the Golovan and Partners Law Firm Ivan Chornyy and Volodymyr Yefymenko on May 25, 2016 took part as the speakers in the ІІІrd International Conference in Lviv «Coiled Tubing. Hydraulic Fracturing. Investment and Management in Oil and Gas Assets» . They presented reports on topics: «Protecting Investments in Ukrainian Oil and Gas Sector», «Collaboration in Joint Projects of Service and Production Companies via Joint Operation Agreements (JOA) and Product Sharing Agreements (PSA)».