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El Ashmawy, Wagdy R., Deniece R. Williams, Alec C. Gerry, John D. Champagne, Terry W. Lehenbauer, ja Sharif S. Aly. "Risk Factors Affecting Dairy Cattle Protective Grouping Behavior, Commonly Known As Bunching, against Stomoxys Calcitrans (L.) On California Dairies." PLoS One 2019.

El Ashmawy, Wagdy R., et al. "Risk Factors Affecting Dairy Cattle Protective Grouping Behavior, Commonly Known As Bunching, against Stomoxys Calcitrans (L.) On California Dairies." PLoS One 2019.