M. M. Gekhtman, M. M. Gekhtman (jr.), Yu. M. Zagirīv, “Sharp estimates for normalized eigenfunctions of the Sturm–Liouville operator on a finite interval with a continuous positive weight function”, Dokl. Akad. Nauk, 334:3 (1994), 268–269; Dokl. Math., 49:1 (1994), 68–70
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