APA

Helle S., Gordon A., Alfaro G., García X., Ulloa C., World Energy Congress (18th. : 2001 oct. 21-25 : Buenos Aires), Gordon A., Alfaro G., García X. & Ulloa C.Coal blends combustion. : .

Chicago

Helle Sonia, Gordon Alfredo, Alfaro Guillermo, García Ximena, Ulloa Claudia, World Energy Congress (18th. : 2001 oct. 21-25 : Buenos Aires), Gordon Alfredo, Alfaro Guillermo, García Ximena and Ulloa Claudia.Coal blends combustion. : .

Harvard

Helle S., Gordon A., Alfaro G., García X., Ulloa C., World Energy Congress (18th. : 2001 oct. 21-25 : Buenos Aires), Gordon A., Alfaro G., García X. and Ulloa C.Coal blends combustion. : .

MLA

Helle Sonia, Gordon Alfredo, Alfaro Guillermo, García Ximena, Ulloa Claudia, World Energy Congress (18th. : 2001 oct. 21-25 : Buenos Aires), Gordon Alfredo, Alfaro Guillermo, García Ximena and Ulloa Claudia.: . .