@article{SM_1987_56_1_a2,
     author = {M. S. Nikol'skii},
     title = {On the lower alternating integral of {Pontryagin} in linear differential games of pursuit},
     journal = {Sbornik. Mathematics},
     pages = {33--47},
     publisher = {mathdoc},
     volume = {56},
     number = {1},
     year = {1987},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1987_56_1_a2/}
}