APED. Advances in Petroleum Exploration and Development - 2015
v. 9 : no. 1 (2015: Mar. 31)
v. 9 : no. 2 (2015: June 30)
v. 10 : no. 1 (2015: Sept. 30)
v. 10 : no. 2 (2015: Dec. 31)