Henríquez, C., Ortiz, O., Largaespada, K., Portuguéz, P., Vargas, M., Villalobos, P., & Gómez, D. (2010). Penetration resistance, tangential shear strength, bulk density and temperature in a soil planted with coffee, Juan Viñas, Costa Rica.

Henríquez, Carlos, Oscar Ortiz, Keneth Largaespada, Pamela Portuguéz, Maylin Vargas, Pamela Villalobos, και Diego Gómez. Penetration Resistance, Tangential Shear Strength, Bulk Density and Temperature in a Soil Planted With Coffee, Juan Viñas, Costa Rica. 2010.

Henríquez, Carlos, et al. Penetration Resistance, Tangential Shear Strength, Bulk Density and Temperature in a Soil Planted With Coffee, Juan Viñas, Costa Rica. 2010.