1. The Moon's Face; A Study of the Origin of Its Features;GILBERT;Philosophical Society of Washington, Bulletin, Washington, D.C.,1893
2. Mountains of the Moon;GIFFORD;The New Zealand Journal of Science and Technology,1924
3. Origin of the Surface Features of the Moon;GIFFORD;The New Zealand Journal of Science and Technology,1930
4. The Impact Theory of the Origin of Lunar Craters;GILVARRY;Publications of the Astronomical Society of the Pacific,1956
5. The Impact of Large Meteorites;GILVARRY;The Astrophysical Journal,1956