Callejón-Ferre, A., Pérez-Alonso, J., Sánchez-Hermosilla, J. and Carreño-Ortega, A. (2009) “Ergonomics and psycho-sociological quality indexes in greenhouses, Almería (Spain)”, Spanish Journal of Agricultural Research, 7(1), pp. 50-58. doi: 10.5424/sjar/2009071-397.