InSAR Deformation Analysis and Source Modelling of the Guagua Pichincha Volcano (Ecuador) - M. Yépez; Elisa Trasatti; Cristiano Tolomei; Simone Atzori; Patricia Mothes; M. Ruiz; Pablo Samaniego (IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2020, Waikoloa, HI, USA, September 26 - October 2, 2020, 2020)