Baruzzi, V. Carosio, R. Crijns, F. Gerdyukov, L. Goldschmidt-Clermont, Y. Grant, A. Johnson, D. Kröner, F. Lehraus, I. Matthewson, R. Milstene, C. Nikolaenko, V. Oren, Y. Petrovikh, Y. Ross, R.T. Sixel, P. Spyropoulou-Stassinaki, M. Stergiou, A. Tejessy, W. Theocharopoulos, P. Vassiliadis, G. Wright, P.R.S. Zoll, J., Use of a large multicell ionization detector - The external particle identifier - In experiments with the BEBC hydrogen bubble chamber, Nuclear Instruments and Methods in Physics Research, (207), 339-356, 1983, 0167-5087