The single sheet tester. Its acceptance, reproducibility, and application issues on grain-oriented steel R. S. Girgis, K. Gramm, J. Sievert et M. G. WickramasekaraJ. Phys. IV France, 08 PR2 (1998) Pr2-729-Pr2-732DOI: https://doi.org/10.1051/jp4:19982170