@incollection{GerkeMasarRoehrig2013,
  author    = {Michael Gerke and Ivan Mas{\´a}r and Christof R{\"o}hrig},
  title     = {Farmland monitoring by sensor networks and airships},
  series = {4th IFAC conference on modelling and control in agriculture, horticulture and post harvest industry : August 2013},
  publisher = {International Federation of Automatic Control},
  address   = {Laxenburg},
  year      = {2013},
  language  = {en}
}