Fernández Rodríguez, Concepción, et al. “Effects of the Behavioral Activation in the Life Quality and Emotional State for Lung Cancer Patients”. Psicooncología, vol. 11, no. 2-3, Nov. 2014, pp. 199-15, https://doi.org/10.5209/rev_PSIC.2014.v11.n2-3.47383.