@Article{SCI:Ber2022b,
  author =    "M. Berzins",
  title =     "Energy conservation and accuracy of some MPM
              formulations",
  journal =   "Computational Particle Mechanics",
  year =      "2022",
  url =       "http://www.sci.utah.edu/publications/Ber2022b/energy-conservation.pdf",
}