Daniels, Brian (2008) Analysis and design of high order digital phase locked loops. PhD thesis, National University of Ireland Maynooth.

Daniels, Brian and Farrell, Ronan and Baldwin, Gerard (2004) Arbitrary Order Charge Approximation Event Driven Phase Lock Loop Model. .

Daniels, Brian and Farrell, Ronan (2006) Design of Fourth Order Digital PLLs Using Filter Prototypes. .

Daniels, Brian and Farrell, Ronan (2006) Design Of High Frequency Digital Phase Locked Loops. .

Daniels, Brian and Baldwin, Gerard and Farrell, Ronan and McLoone, Sean, eds. (2005) Modelling and Design of High-Order Phase Locked Loops. .

Daniels, Brian and Farrell, Ronan (2008) Nonlinear Analysis of the 2nd Order Digital Phase Locked loop. In: 16th IET Irish Signals and Systems Conference 2008, 18th & 19th June 2008, Galway, Ireland.

Daniels, Brian and Farrell, Ronan (2008) Rigorous Stability Criterion for Digital Phase Locked Loops. ISAST Transactions on Electronics and Signal Processing, Vol. 3 (No. 2).