صالح م. , أحمد كلزية, محمد هشام أبظلي and منار حسن 2023. Synthesis Of Compounds ) Sr3-xYbxCo2-yFeyO , Sr3-xTbxCo2-yFeyO7( Belonging To The Radelsden-Popper Series When n=2 By Partial Replacement Of Cobalt With Iron At The B Site And Partial Replacement Of Strontium With Rare Earth Elements At The A Site using the Ceramic Method. Tishreen University Journal -Basic Sciences Series. 45, 4 (Sep. 2023), 69–80.