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.