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References:
[1] J. V. Baxley: The Friedrichs extension of certain singular differential operators. Duke Math. J. 35 (1968), 455–462. MR 0226446 | Zbl 0174.45701
[2] J. V. Baxley: Eigenvalues of singular differential operators by finite difference methods, I, II. J. Math. Anal. Appl. 37 (1972), 244–254, 257–275. DOI 10.1016/0022-247X(72)90132-1 | MR 0303354 | Zbl 0237.47023
[3] J. V. Baxley: Some partial differential operators with discrete spectra. Spectral Theory of Differential Operators (Birmingham, AL, 1981), North-Holland Math. Studies 55, North-Holland, Amsterdam, 1981, pp. 53–59. MR 0640875 | Zbl 0482.35062
[4] N. Dunford and J. T. Schwartz: Linear Operators, Part II. Wiley (Interscience), New York, 1963. MR 1009163
[5] M. S. P. Eastham: The least limit point of the spectrum associated with singular differential operators. Proc. Camb. Phil. Soc. 67 (1970), 277–281. DOI 10.1017/S0305004100045552 | MR 0252740 | Zbl 0191.44001
[6] K. O. Fredrichs: Criteria for the discrete character of the spectra of ordinary differential operators, In Courant Anniversary Volume. Interscience, New York, 1948. MR 0023415
[7] K. O. Friedrichs: Criteria for discrete spectra. Comm. Pure Appl. Math. 3 (1950), 439–134. DOI 10.1002/cpa.3160030407 | MR 0042584 | Zbl 0041.21004
[8] D. B. Hinton and R. T. Lewis: Singular differential operators with spectra discrete and bounded below. Proc. Royal Soc. Edinburgh Sect. A 84 (1979), 117–134. MR 0549875
[9] R. T. Lewis: Singular elliptic operators of second order with purely discrete spectra. Trans. Amer. Math. soc. 271 (1982), 653–666. DOI 10.1090/S0002-9947-1982-0654855-X | MR 0654855 | Zbl 0507.35069
[10] R. T. Lewis: The spectra of some singular elliptic operators of second order. Spectral Theory of Differential Operators (Birmingham, AL, 1981), North-Holland Math. Studies 55, North-Holland, Amsterdam, 1981, pp. 303–318. MR 0640900 | Zbl 0486.35062
[11] L. W. Rollins: Criteria for discrete spectrum of singular self-adjoint operators. Proc. Amer. Math. Soc. 34 (1972), 195–200. DOI 10.1090/S0002-9939-1972-0291883-X | MR 0291883
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