Erratum: A novel low-Temperature Preparation of Ultrafine Nickel-Zinc Ferrites and Their Magnetic and Mössbauer Characterization T. Pannaparayil, R. Marande and S. KomarneniJ. Phys. I France, 4 3 (1994) 489DOI: https://doi.org/10.1051/jp1:1994153