[1]
Liendo, G.R. et al. 2010. Fatigue and sleepiness in interprovincial road bus drivers: comparative study between formality and informality. Revista Peruana de Medicina Experimental y Salud Pública. 27, 2 (Jun. 2010). DOI:https://doi.org/10.17843/rpmesp.2010.272.1463.