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2. The Quantum Postulate and the Recent Development of Atomic Theory1
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4. I.L. Egusquiza, J.G. Muga, Phys. Rev. A 61 (2000) 012104 (Note a typographical erratum in the last paragraph of the first page: where it says “the momentum operator in the half-line is self-adjoint”, it should say “the momentum operator in the half-line is not self-adjoint”.), quant-ph/9905023; Phys. Rev. A 61 (2000) 059901, Erratum.
5. Time of Arrival Operator