中国科学院数学与系统科学研究院期刊网
Nontrivial Solutions of Semi-positone (k, n-k) Boundary Value Problem Subject to Nonlocal Boundary Conditions with Stieltjes Integrals
YIN Chenyang, MA Yuexiao, ZHANG Guowei
Acta Mathematicae Applicatae Sinica . 2020, (1): 62 -78 .  DOI: 10.12387/C2020005