1. Vehicle impact attenuation by modular crash cushion;Hirsch,1969
2. In-service experience on installations of Texas modular crash cushions;White,1969
3. Performance of the Hi-Dro cushion cell barrier vehicle-impact attenuator;Hayes;Highway res. Record,1971
4. Water-plastic crash attenuation system: test performance and model prediction;Warner;Highway Res. Record,1981
5. Dynamic tests of an energy absorbing barrier employing sand-filled plastic barrels;Nordlin;Highway Res. Record,1972