R. P. Kraft, The Astrophysical Journal, Vol. 142, 1965, pp. 681-702. doi:10.1086/148330
has been cited by the following article:
TITLE: The Spring of the Earth, the Sun and the Universe
AUTHORS: Ling Man Tsang
KEYWORDS: Cosmological Constant; Expanding Universe; Dark Matter
JOURNAL NAME: Journal of Modern Physics, Vol.4 No.9, September 30, 2013
ABSTRACT: A spring term is added into Newton’s law of gravitation. The spring k of the earth is found to be 1.21 × 10-8/sec2. The PPN gamma is a dependence of distance r from the sun. The expanding universe is due to the cosmological constant. The Hubble constant is found to be the square root of the cosmological constant. The query of the missing dark matter in the galaxies is clarified.