Lukowski SL, DiTrapani J, Rockwood NJ, Jeon M, Thompson LA, Petrill SA. Etiological distinction across dimensions of math anxiety. Behav Genet. 2019 May;49(3):310-6. doi: 10.1007/s10519-018-09946-3
Bonfill X, Rivero E, Moreno C, Rué M. Changes in cancer mortality in Catalonia and Spain (1975-77 and 1987-89). A comparison with other European countries. Eur J Cancer Prev. 1995 Dec;4(6):453-8.