HOANG THANH TUNG; NGUYEN PHAM HUY CUONG; TRAN HONG NAM; LE QUANG DUYEN; DAO THI UYEN. Optimising the under-reamer string design for the well at Hai Thach field, Nam Con Son basin. Petrovietnam Journal, v. 6, p. 37 - 44, 30 Jun. 2020.