TY - CPAPER AU - Miroslav Langer TI - ON VARIANTS OF POSITIONED ECO-GRAMMAR SYSTEMS AND FINITE LANGUAGES T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th International Multidisciplinary Scientific GeoConference SGEM2018, Informatics, Geoinformatics and Remote Sensing PY - 2018 SP - 625 EP - 632 DO - 10.5593/sgem2018/2.1/s07.080 PB - STEF92 Technology ER -