La intervención del círculo de seguridadBert Powell, Glen Cooper, Kent Hoffman, Bob Marvin, Carlos Pitillas Salvá · First published 2019Open the Tome
Circle of Security InterventionBert Powell, Glen Cooper, Kent Hoffman, Bob Marvin, Zeanah, Charles H., Jr. · First published 2013Open the Tome
Operational effects on crashworthy seat attenuatorsMarvin Kent Richards · First published 1990Open the Tome
