B. Bernard, J. Bustillos, B. Wade, and S. Hidalgo, “Influence of the wind direction variability on the quantification of tephra fallouts: December 2012 and March 2013 Tungurahua eruptions”, ACI Av. Cienc. Ing. (Quito), vol. 5, no. 1, Apr. 2013, doi: 10.18272/aci.v5i1.112.