Wire spark chambers with ferrite core storage and two coordinate read-out Galster, S.; Hartwig, G.; Klein, H.; Moritz, J.; Schmidt, K. H.; Schmidt-Parzefall, W.; Schopper, H.; Wegener, D. 1968. Nuclear Instruments and Methods, Intern. symp. on nuclear electronics, Versailles 10.-13.9.1968 Paris 1968. Tome, 3 p. 49, 76 (1969) S. 337-41