@article{ND_2010_6_1_a9,
     author = {A. A. Davydov and T. S. Shutkina},
     title = {Time average optimization of cycle process with profit and effort discounts},
     journal = {Russian journal of nonlinear dynamics},
     pages = {151--158},
     publisher = {mathdoc},
     volume = {6},
     number = {1},
     year = {2010},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ND_2010_6_1_a9/}
}