Multiple studies have been conducted by Jeanine Baker and Samara McPhedran, researchers with the International Coalition for Women in Shooting and Hunting (WiSH). In 2006 their paper on the 1996 firearms legislation in the "British Journal of Criminology" used an ARIMA analysis and found little evidence for an impact of the laws on homicide, but did for suicide.Don Weatherburn described the article as "reputable" and "well-conducted" but also stated that "it would be wrong to infer from the study that it does not matter how many guns there are in the community." Simon Chapman stated the article ignored the Mass Shootings issue such as the Port Arthur Massacre. In 2012, McPhedran and Baker found there was little evidence for any impacts of the gun laws on firearm suicide among people under 35 years of age, and suggested that the significant financial expenditure associated with Australia's firearms method restriction measures may not have had any impact on youth suicide. In 2008 McPhedran compared the incidence of mass shootings in Australia and New Zealand. The authors' conclude that "if civilian access to certain types of firearms explained the occurrence of mass shootings in Australia then New Zealand would have continued to experience mass shooting events".