1. SIqbal-Department of Mathematics, University of Sargodha (Sub-Campus Bhakkar)
2. SJ. Pečarić-Faculty of Textile Technology, University of Zagreb
3. SM. Samraiz-Department of Mathematics, University of Sargodha
4. SFaculty of Mathematics and Natural Sciences, Gazi Baba bb; Zivorad Tomovski Department of Mathematics, University of Rijeka Radmile Matejcic 2