%0 Journal Article %T Upper critical field of Bi1£¿¡¤5-Pb0£¿¡¤5-Ca2-Sr2-Cu3-Ox superconductor %A S V Subramanyam %A V Prasad %J - %D 1991 %U https://www.ias.ac.in/describe/article/boms/014/04/0891-0893