@article{CC_2003_32_4_a8,
     author = {Banek, Tadeusz and Kulikowski, Roman},
     title = {Information pricing for portfolio optimization},
     journal = {Control and Cybernetics},
     pages = {867--882},
     year = {2003},
     volume = {32},
     number = {4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CC_2003_32_4_a8/}
}