Ar Drywydd Enwau LleoeddCymdeithas Enwau Lleoedd Cymru, Gareth A. Bevan, G. Angharad Fychan, Hywel Wyn Owen, Ann Parry Owen · First published 2021Open the Tome
Science and Technology of Particle AcceleratorsRob Appleby, Graeme Burt, Hywel Owen, James Clarke · First published 2020Open the Tome
Physical properties of organosiloxane ferroelectric liquid crystals and fluorescent dyes for electro-optic device applicationsHywel Leroy Owen · First published 1995Open the Tome