@article{10_4064_am30_2_5,
     author = {Micha{\l} Motoczy\'nski},
     title = {Risk minimization in
  the model with transaction costs},
     journal = {Applicationes Mathematicae},
     pages = {209--216},
     publisher = {mathdoc},
     volume = {30},
     number = {2},
     year = {2003},
     doi = {10.4064/am30-2-5},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/am30-2-5/}
}