PDF(269 KB)
A THEOREM OF THREE SOLUTIONS FOR PERIODIC BOUNDARY VALUE PROBLEMS OF SECOND ORDER DIFFERENTIAL EQUATION
Fu Bao ZHANG
Journal of Systems Science and Mathematical Sciences ›› 2000, Vol. 20 ›› Issue (3) : 257-263.
PDF(269 KB)
PDF(269 KB)
A THEOREM OF THREE SOLUTIONS FOR PERIODIC BOUNDARY VALUE PROBLEMS OF SECOND ORDER DIFFERENTIAL EQUATION
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