Meenu Rani และ Brijesh Kumar Grewal. (2023) Difference approximation of positive linear operators on unit square. <i>Maejo International Journal of Science and Technology</i>, <i>17</i>(1), 81.Meenu Rani และ Brijesh Kumar Grewal. "Difference approximation of positive linear operators on unit square". Maejo International Journal of Science and Technology 17 (2023):81.Meenu Rani และ Brijesh Kumar Grewal. Difference approximation of positive linear operators on unit square. Maejo University:ม.ป.ท. 2023.