Gorbunov М.В. and Smirnov В.В. 2017. Identification of Optimum Number of Waves of the Planetary Rotor Hydrocar by Criterion of Productivity. Vestnik IzhGTU imeni M.T. Kalashnikova. 20, 2 (Jul. 2017), 35–37. DOI:https://doi.org/10.22213/2413-1172-2017-2-35-37.