Le Vu Quan, Vu Duc Ung, Pham Hong Trang, Le Thi Thu Huong, Nguyen Manh Tuan, and Do Huu Trung, “Some solutions to improve the cement bond quality for carbonate zones in Block 05-1a, offshore Vietnam”, PVJ, vol. 10, pp. 24 - 31, Oct. 2016.