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Galapon, E.A. and Overio, A.G. 1998. Iterative construction of the quasi-time operator (QTO) for the Hamiltonian H = p2/2μ + fqn in anti-standard form. Proceedings of the Samahang Pisika ng Pilipinas, 16(1), SPP-1998-TP-05. URL: https://proceedings.spp-online.org/article/view/SPP-1998-TP-05.