@Article{484937,
     author = "Dariusz Doskocz",
     title = "Profitability of reduction of speed and fuel consumption for sea going bulk carriers",
     year =  2012,
     volume =  11(19),
     number =  1,
     journal =  Folia Oeconomica Stetinensia,
     pages =  s. 128-135,
    }