APED. Advances in Petroleum Exploration and Development - 2013
v. 5 : no. 1 (2013: Mar. 31)
v. 5 : no. 2 (2013: June 30)
v. 6 : no. 1 (2013: Sept. 30)
v. 6 : no. 2 (2013: Dec. 31)