Since the foundations of our understanding of the age and size of the cosmos are based on quasars and redshift, he has a religious and not only scientific interest in the subject.
Here is a bibliography taken from the Western Australian University researcher profile page. The authors and titles give accurate insight into his work in the scientific community. Some of his work in the realm of creationism are published by the Creation Ministries International.
Judging from the wikipedia article, J.G. Hartnett seems to give special value to his cooperation with and the support he has received of professor M,Carmeli. "According to Moshe Carmeli, Professor of Theoretical Physics at Ben Gurion University in Beer Sheva, Israel, Hartnett in his theory demonstrated that there is no need to reckon with the existence of the dark matter in the universe." (wikipedia)
Hartnett, J.G. 2009,
'Unknown selection effect simulates redshift periodicity in quasar number counts from Sloan Digital Sky Survey', Astrophysics and Space Science, 324, pp. N/A
Hartnett, J.G., Oliveira, F. 2008,
Testing CGR against High Redshift Observations
in Relativity: Modern Large-Scale Spacetime Structure of the Cosmos, World Scientific Publishing Co. PTE LTD , Singapore
Hartnett, J.G. 2008,
'Extending the Redshift-Distance Relation in Cosmological General Relativity to Higher Redshifts',
Foundations of Physics, 1, pp. online - approx 5-20pp
Hartnett, J.G., Hirano, K. 2008,
'Galaxy redshift abundance periodicity from Fourier analysis of number counts N(z) using SDSS and 2dF GRS galaxy surveys', Astrophysics and Space Science, 318, pp. 13-24.
Hartnett, J.G. 2008,
'The redshift-distance relation extended to higher redshifts in Cosmological General Relativity',
Fundamental and Computational Physics 9th International Symposium, New York, USA, 1018, pp. 57-66.
Hartnett, J.G. 2006,
'The Distance Modulus Determined from Carmeli's Cosmology Fits the Accelerating Universe Data of the High-redshift Type Ia Supernovae Without Dark Matter', Foundations of Physics, 36, 6, pp. 839-861
Carmeli, M., Hartnett, J.G., Oliveira, F.J. 2006,
'The Cosmic Time in Terms of the Redshift ', Foundations of Physics Letters, 19, 3, pp. 277-283.