%0 Journal Article %T On the effects of Ti, Zr and Ce substitution in YBa2Cu3O7a£¿£¿£¿¡ä: transport, XRD, XPS and XANES studies %A A V Narlikar %A B D Padalia %A D T Adroja %A N Venkataramani %A O M Prakash %A P D Prabhawalkar %A P K Mehta %A S K Malik %J - %D 1991 %U https://www.ias.ac.in/describe/article/boms/014/03/0871-0876