Sekulski, Zbigniew. “Optimisation Algorithm for the Profit from Operation of a Barge Train Versus Settings of the Main Engine During Inland Navigation in Varying Water Resistance Conditions (part 2)”. Archives of Transport, vol. 23, no. 3, Sept. 2011, pp. 391-12, https://doi.org/10.2478/v10174-011-0026-5.