ETSI PRETS 300 133-1-1997 Electromagnetic Compatibility and Radio Spectrum Matters (ERM); Enhanced Radio MEssage System (ERMES); Part 1: General Aspects Second Edition
1997ETSI ETS 300 133-1-1997 Electromagnetic Compatibility and Radio Spectrum Matters (ERM); Enhanced Radio MEssage System (ERMES); Part 1: General Aspects (Second Edition)
1996ETSI PRETS 300 133-1-1996 Radio Equipment and Systems (RES); European Radio MEssage System (ERMES); Part 1: General Aspects Second Edition
1991ETSI PRETS 300 133-1-1991 Paging Systems; European Radio Message System (ERMES) Part 1: General Aspects
ETSI PRETS 300 133-1-1997 Electromagnetic Compatibility and Radio Spectrum Matters (ERM); Enhanced Radio MEssage System (ERMES); Part 1: General Aspects Second Edition was changed to ETSI ETS 300 133-1-1997 Electromagnetic Compatibility and Radio Spectrum Matters (ERM); Enhanced Radio MEssage System (ERMES); Part 1: General Aspects (Second Edition).