APA

Walton I. C., Atwood D. C., Schlumberger, Pennsylvania State University, Petrobras, SPE Annual Technical Conference and Exhibition (2001 sept. 30-3 oct. : New Orleans), Atwood D. C., Schlumberger, Pennsylvania State University & Petrobras.Perforating unconsolidated sands. : .

Chicago

Walton Ian C, Atwood David C, Schlumberger, Pennsylvania State University, Petrobras, SPE Annual Technical Conference and Exhibition (2001 sept. 30-3 oct. : New Orleans), Atwood David C, Schlumberger, Pennsylvania State University and Petrobras.Perforating unconsolidated sands. : .

Harvard

Walton I. C., Atwood D. C., Schlumberger, Pennsylvania State University, Petrobras, SPE Annual Technical Conference and Exhibition (2001 sept. 30-3 oct. : New Orleans), Atwood D. C., Schlumberger, Pennsylvania State University and Petrobras.Perforating unconsolidated sands. : .

MLA

Walton Ian C, Atwood David C, Schlumberger, Pennsylvania State University, Petrobras, SPE Annual Technical Conference and Exhibition (2001 sept. 30-3 oct. : New Orleans), Atwood David C, Schlumberger, Pennsylvania State University and Petrobras.: . .