@article{MM_1995_7_1_a1,
     author = {N. N. Kalitkin},
     title = {Optimal canceling of mutual debts},
     journal = {Matemati\v{c}eskoe modelirovanie},
     pages = {11--21},
     publisher = {mathdoc},
     volume = {7},
     number = {1},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MM_1995_7_1_a1/}
}