@article{Yan_1998, title={On the number of interior multipeak solutions for singularly perturbed Neumann problems}, volume={12}, url={https://apcz.umk.pl/TMNA/article/view/TMNA.1998.028}, abstractNote={NO ABSTRACT}, number={1}, journal={Topological Methods in Nonlinear Analysis}, author={Yan, Shusen}, year={1998}, month={Sep.}, pages={61–78} }