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Solution of linear ordinary differential equations containing a parameter. (English) Zbl 0050.08904


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[1] W. J. Trjitzinsky, Theory of linear differential equations containing a parameter, Acta Math. 67 (1936), no. 1, 1 – 50. · Zbl 0014.34802 · doi:10.1007/BF02401737
[2] Rudolph E. Langer, The asymptotic solutions of ordinary linear differential equations of the second order, with special reference to a turning point, Trans. Amer. Math. Soc. 67 (1949), 461 – 490. · Zbl 0041.05901
[3] T. M. Cherry, Uniform asymptotic formulae for functions with transition points, Trans. Amer. Math. Soc. 68 (1950), 224 – 257. · Zbl 0036.06102
[4] Wolfgang Wasow, A study of the solutions of the differential equation \?\?\(^{4}\)\?+\?²(\?\?”+\?)=0 for large values of \?, Ann. of Math. (2) 52 (1950), 350 – 361. · Zbl 0038.24602 · doi:10.2307/1969474
[5] R. L. Evans, Bull. Amer. Math. Soc. Abstract 56-1-48 and University of Minnesota thesis, April 1951.
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