摘要: By using fixed-point index theory, we study boundary value problems for systems of nonlinear second-order differential equation, and a result on existence and multiplicity of positive solutions is obtained.
                                                        
                              
                             
                            
                            																								
								
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                                        															郑冬梅, 鲁世平. 二阶非线性微分方程组边值问题的正解[J]. 数学季刊, 2011, 26(2): 179-184.	
																																									     												                                                                                                        	                                                                                                                      ZHENG Dong-mei, LU Shi-ping. Positive Solutions of Boundary Value Problems for Systems of Nonlinear Second-order Differential Equations [J]. Chinese Quarterly Journal of Mathematics, 2011, 26(2): 179-184.