Qualitative and quantitative examinations of microscopic steel cleanliness in slab samplesJ. Angeli, H. Flößholzer, K. Jandl, T. Kaltenbrunner, W. Posch and H. PreßlingerRev. Met. Paris, 96 4 (1999) 521-528DOI: https://doi.org/10.1051/metal/199996040521