APA

Ovalles C., Vallejos C., Vásquez T., Vallejos C. & Vásquez T.Downhole upgrading of extra-heavy oil by use of hydrogen donors. : .

Chicago

Ovalles Cesar, Vallejos Carlos, Vásquez Tito, Vallejos Carlos and Vásquez Tito.Downhole upgrading of extra-heavy oil by use of hydrogen donors. : .

Harvard

Ovalles C., Vallejos C., Vásquez T., Vallejos C. and Vásquez T.Downhole upgrading of extra-heavy oil by use of hydrogen donors. : .

MLA

Ovalles Cesar, Vallejos Carlos, Vásquez Tito, Vallejos Carlos and Vásquez Tito.: . .