Search results for: K. D. Aleksandrov
Vestnik St. Petersburg University, Mathematics > 2018 > 51 > 1 > 77-81
Doklady Physics > 2017 > 62 > 12 > 564-566
Doklady Mathematics > 2015 > 92 > 3 > 769-772
Differential Equations > 2013 > 49 > 13 > 1675-1703