Sirens of Sauda

Romm, Carl Daniel / Aabø, Ask Olsson | BASE | 2022

SIRENS, SOUNDERS & VOICE ANNUNCIATORS

Peberdy, Bill | Online Contents | 1997

RED LIGHTS AND SIRENS: MARKETING TOOLS

Wallace, M. | British Library Online Contents | 2007

Safer sirens thanks to better sound quality

Withington, D. | British Library Online Contents | 1998

Smart Sirens—Civil Protection in Rural Areas

Sascha Henninger / Martin Schneider / Arne Leitte | DOAJ | 2021