K. A. Nejar, I. M. Benseñor, and P. A. Lotufo, “ Sunshine and suicide at the tropic of Capricorn, São Paulo, Brazil, 1996-2004 ”, Rev. saúde pública, vol. 41, no. 6, pp. 1062–1064, Dec. 2007, doi: 10.1590/S0034-89102006005000046.