Periodic Solutions of Second Order Impulsive Differential Equations at Resonance via Variational Approach
- Type
- Retraction
- Notice date
- 3/30/2015 0:00
- Journal
- Mathematical Modelling and Analysis
- Publisher
- Taylor and Francis
- Notice DOI
- 10.3846/13926292.2015.1024973
- Original paper DOI
- 10.3846/13926292.2014.980864