Tak w temacie ZAX, moze komus sie przyda https://www.ericsson.com/assets/local/about-ericsson/ericsson-history/lme-review/documents/da2011-35550-ericsson_review_vol_35_1958.pdf
https://www.ericsson.com/assets/local/about-ericsson/ericsson-history/lme-review/documents/da2011-35566-ericsson_review_vol_51_1974.pdf |