@article{KotterRiekert2007,
  author    = {Michael Kotter and L. Riekert},
  title     = {Tr{\"a}nkkontakte zur partiellen Oxidation von Buten zu Maleins{\"a}ureanhydrid},
  journal   = {Chemie - Ingenieur - Technik. 59 (1987), H. 9},
  pages     = {733 -- 734},
  year      = {2007},
}