Moelfre a'r Môr - Ffarwel i'r Grassholm Gribog Ffarwel i'r Grassholm Gribog Evans, Robin Heftet / 2009 / Walisisk
Wales and the World: Counting the Cost - Wales and the World in the 1930s Evans, Robin Heftet / 2008 / Engelsk
Hybrid Dynamical Systems Controller and Sensor Switching Problems Savkin Andrey V. Heftet / 2012 / Engelsk
Hybrid Dynamical Systems Controller and Sensor Switching Problems Savkin Andrey V. Innbundet / 2002 / Engelsk
