@inproceedings{3397,
  author       = {Haubrock, Jens and Heideck, Günter and Styczynski, Zbigniew Antoni},
  isbn         = {978-5-93208-034-4},
  location     = {St. Petersburg},
  title        = {{Independent power units with polymer membrane fuel cells}},
  doi          = {10.1109/PTC.2005.4524424},
  year         = {2005},
}

@inproceedings{3398,
  author       = {Angelov, Angel and Haubrock, Jens and  Styczynski, Zbigniew Antoni and Schweizer-Ries, Petra},
  isbn         = {978-5-93208-034-4},
  location     = {St. Petersburg},
  title        = {{Learning about Renewables using VRML-Technology}},
  doi          = {10.1109/PTC.2005.4524508},
  year         = {2005},
}