In the past C.L. Kirkland has collaborated on articles with R.H. Smithies and D.R. Mole. One of their most recent publications is Discriminating prolonged, episodic or disturbed monazite age spectra: An example from the Kalak Nappe Complex, Arctic Norway. Which was published in journal Chemical Geology.
More information about C.L. Kirkland research including statistics on their citations can be found on their Copernicus Academic profile page.