القاموع أ., أحمد م., غوسبودينوف س. ., and كحيله ع. “Studying the Effect of Using Precise Geodetic Products from Various Data Centers on Precise Point Positioning Accuracy”. Tishreen University Journal -Engineering Sciences Series, vol. 42, no. 4, Oct. 2020, https://journal.tishreen.edu.sy/index.php/engscnc/article/view/9922.