<https://asmedigitalcollection.asme.org/computationalnonlinear/article/4/3/034501/395283/Nonsmooth-Dynamics-by-Path-Integration-An-Example>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://electronicpackaging.asmedigitalcollection.asme.org/computationalnonlinear/article-abstract/4/3/034501/395283/Nonsmooth-Dynamics-by-Path-Integration-An-Example>