Pujol J, Martinez-Vilavella G, Macia D, Fenoll R, Alvarez-Pedrerol M, Rivas I, Forns J, Blanco-Hinojo L, Capellades J, Querol X, Deus J, Sunyer J. Traffic pollution exposure is associated with altered brain connectivity in school children. Neuroimage. 2016 Apr;1(129):175-84. doi: 10.1016/j.neuroimage.2016.01.036.
Reed (Earnshaw) SJ, Reed JH. The use of statistical quality control charts in monitoring interviewers. Proceedings of the Survey Research Methods Section, American Statistical Association. 1997 Jan;893-8.