Arshad Sadia and Buşe Constantin and Nosheen Ammara and Zada Akbar: Connections between the stability of a Poincare map and boundedness of certain associate sequences. (2011)
Lupulescu Vasile and Zada Akbar: Linear impulsive dynamic systems on time scales. (2010)
Buşe Constantin and Zada Akbar: Boundedness and exponential stability for periodic time dependent systems. (2009)