Volume 4 (1962)

Number

1 (May), 2 (September)

Sibuya, Y.;
Asymptotic Solutions of a System of Linear Ordinary Differential Equations Containing a Parameter
pp. 83--113.
Sibuya, Y.;
Formal Solutions of a Linear Ordinary Differential Equation of the $n$th Order at a Turning Point
pp. 115--139.

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