@Misc{ 
  M.JMor12,
  author = { M. J. Baechtold,  and Moreno, G. },
  title = { Remarks on non-maximal integral elements of the Cartan plane in jet
  spaces },
  journal = {  },
  year = { 2012 },
  pages = {  },
  URL = { https://gecogedi.dimai.unifi.it/paper/391/ },
  note = { cvgmt preprint}
}