1. On Edwards' criterion of seasonality and a non-parametric alternative;Hewitt, D.; Milner, J.; Csima, A.; Pakula, A.;BrJ7 Prev Soc Med,1971
2. Fisher RS. Suicide by vehicular crash;Schmidt, C.W.; Shaffer, J.W.; Zlotowitz, H.I.;Am J Psychiatry,1977
3. Accident or suicide?;Tabachnick, N.; Gussen, J.; Litman, R.; Peck, M.; Tiber, N.; Wold, C.,1973