“THE ESSENTIAL SPECTRUM OF THE SCHRÖDINGER OPERATOR FOR A THREE-PARTICLE SYSTEM WITH MASSES m1 = M2 = c∞ AND m3 < ∞”, INNOIST, vol. 2, no. 6, pp. 678–687, Jun. 2025, Accessed: Jun. 17, 2025. [Online]. Available: https://www.innoist.uz/index.php/ist/article/view/1052