López, A., D. L. Valera, F. D. Molina-Aiz, and A. Peña. “Sonic Anemometry Measurements to Determine Airflow Patterns in Multi-Tunnel Greenhouses”. Spanish Journal of Agricultural Research, Vol. 10, no. 3, June 2012, pp. 631-42, doi:10.5424/sjar/2012103-660-11.