000			00465nmm a2200145Ia 4500
008			230125s9999||||xx |||||||||||||||||und||
020			_a9789400901933
100			_aG.A. Leonov, I.M. Burkin, A.I. Shepeljavyi
245		0	_aFrequency Methods in Oscillation Theory
250			_a1996
260			_bSpringer Netherlands _c1996
440			_aMathematics and Its Applications
650			_aMathematics and Statistics
856			_uhttps://doi.org/10.1007/978-94-009-0193-3
999			_c7764 _d7764