Lars Barregard, Monica Nordberg, Bruce Fowler, Gunnar Nordberg, Thomas W. Clarkson, On behalf of the SCTM -. “Dr. Maths Berlin”. La Medicina Del Lavoro, vol. 106, no. 3, Apr. 2015, p. 232, https://doi.org/10.23749/mdl.v106i3.4389.