@incollection{CalliessKrollLudwigs2019,
  author    = {Gralf-Peter Calliess and Kathrin Kroll-Ludwigs},
  title     = {Art. 6 Rome III-Regulation (consent and material validity)},
  booktitle = {Rome Regulations : commentary},
  isbn      = {9789041147547},
  year      = {2019},
}