سلام. ممنون میشم زحمت این مقاله رو بکشید:
Influence of doping BiYO3 and Nb2O5 on PTCR characteristics of BaTiO3 thermistor ceramics
Yongping Pu [Author Vitae],
Haidong Wu, [Author Vitae],
Jifeng Wei [Author Vitae]
Volume 173, Issue 1, January 2012, Pages 158–162...