Gascon M, Cirach M, Martinez D, Dadvand P, Valentin A, Plasencia A, Nieuwenhuijsen MJ. Normalized difference vegetation index (NDVI) as a marker of surrounding greenness in epidemiological studies: the case of Barcelona city. Urban For Urban Green. 2016 Sep;19:88-94. doi: 10.1016/j.ufug.2016.07.001
Granero R, Fernandez-Aranda F, Aymami N, Gomez-Pena M, Fagundo AB, Sauchelli S, Del Pino-Gutierrez A, Moragas L, Savvidou LG, Islam MA, Tarrega S, Menchon JM, Jimenez-Murcia S. Subtypes of pathological gambling with concurrent illegal behaviors. J Gambl Stud. 2015 Dec;31(4):1161-78. doi: 10.1007/s10899-014-9499-5.