TY - JOUR AU - S. I. Mitrokhin TI - On the asymptotic behavior of the spectrum of a sixth-order differential operator, whose potential is the delta function JO - Žurnal Srednevolžskogo matematičeskogo obŝestva PY - 2020 SP - 280 EP - 305 VL - 22 IS - 3 UR - http://geodesic.mathdoc.fr/item/SVMO_2020_22_3_a2/ LA - ru ID - SVMO_2020_22_3_a2 ER -