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"Three positive solutions for second-order Neumann boundary value problems."
Jian-Ping Sun, Wan-Tong Li, Sui-Sun Cheng (2004)
- Jian-Ping Sun, Wan-Tong Li
, Sui-Sun Cheng:
Three positive solutions for second-order Neumann boundary value problems. Appl. Math. Lett. 17(9): 1079-1084 (2004)
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