@unpublished{ITNYREPOID4054,
          author = {- Subardi},
           title = {Oxygen transportation, electrical conductivity and electrochemical properties of layered perovskite SmBa0.5Sr0.5Co2O5+{\ensuremath{\delta}}},
       publisher = {ITNY},
             url = {https://repository.itny.ac.id/id/eprint/4054/}
}