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"A necessary and sufficient condition for the existence of positive ..."
Yumei Xu, Lishan Li, Lokenath Debnath (2005)
- Yumei Xu, Lishan Li, Lokenath Debnath:
A necessary and sufficient condition for the existence of positive solutions of singular boundary value problems. Appl. Math. Lett. 18(8): 881-889 (2005)
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