Interval Oscillation Criteria for Second-order Forced Impulsive Delay Differential Equations with Damping Term
          Thandapani, E. ; Manju, K.; Pinelas, Sandra  
          
          SpringerPlus , 5:558 (2016), 1-16  
           https://springerplus.springeropen.com/articles/10.1186/s40064-016-2117-5  
           
            
         |