Bernard, Benjamin, et al. “Influence of the Wind Direction Variability on the Quantification of Tephra Fallouts: December 2012 and March 2013 Tungurahua Eruptions”. ACI Avances En Ciencias E Ingenierías, vol. 5, no. 1, Apr. 2013, https://doi.org/10.18272/aci.v5i1.112.