1. Wave functions of the hydrogen molecular ion
2. Exact wave functions of HeH
2+
3. Electronic Eigenenergies of the Hydrogen Molecular Ion
4. Calculation of upper and lower bounds for eigenvalues by a boundary condition method: The quartic oscillator, hydrogen molecule ion, and helium atom
5. T. Murai and H. Takatsu,Table of Electronic Energy ofH2+. Contributions from the Research Group on Atoms and Molecules, No. 10, Progress Report VII, March 1974, pp. 74–111. Research Group on Atoms and Molecules, c/o Department of Physics, Faculty of Science, Ochanomizu University, 1-1, Otsuka 2 chome, Bunkyo-ku, Tokyo 112, Japan.