Chongtham Jiten and  K. Chandramani Singh and  Radhapiyari Laishram,  Effect of High-Energy Ball Milling on the Electrical and Piezoelectric Properties of (K0.5Na0.5)(Nb0.9Ta0.1)O3 Lead-Free Piezoceramics.   journal   = {International Journal of Materials and Metallurgical Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2015, vol. 97(1). 11 - 14
    [viewed 17 October 2019]. Available from: https://publications.waset.org/pdf/10000157.