“HARDNESS AND FRATURE TOUGHNE OF PLASMA SPRAYED ZIRCONIA-CERIA-YTTRIA THERMAL BARRIER COATINGS”. THE IRAQI JOURNAL FOR MECHANICAL AND MATERIALS ENGINEERING, vol. 18, no. 2, Aug. 2018, pp. 214-28, https://doi.org/10.32852/iqjfmme.Vol18.Iss2.87.