[1] Oppenheimer, J.R. and Volkoff, G.M. (1939) On Massive Neutron Cores. Physical Review, 55, 374-381. http://dx.doi.org/10.1103/PhysRev.55.374
[2] Ni, J. (2011) Solutions without a Maximum Mass Limit of the General Relativistic Field Equations for Neutron Stars. Science China, Physics, Mechanics, and Astronomy, 54, 1304-1308.
http://dx.doi.org/10.1007/s11433-011-4350-9
[3] Fiziev, P.P. (2004) Novel Geometrical Models of Relativistic Stars. I. The General Scheme. arXiv:astro-ph/0409456.
[4] Fiziev, P.P. (2004) Novel Geometrical Models of Relativistic Stars. II. Incompressible Stars and Heavy Black Dwarfs. arXiv:astro-ph/0409458.
[5] Neslu?an, L. (2014) Non-Trivial Linkup of Both Compact-Neutron-Object and Outer-Empty-Space Metrics. International Journal of Astronomy and Astrophysics, 4, 1-10.
[6] Schwarzschild, K. (1916) über das Gravitationsfeld eines Massenpunktes nach der Einstein’schen Theorie. Sitzungsberichte der K?niglich Preussischen Akademie der Wissenschaften zu Berlin, Phys.-Math. Klasse, 1, 189-196.
[7] Einstein, A. (1915) Die Feldgleichungun der Gravitation. Sitzungsberichte der Preussischen Akademie der Wissenschaften zu Berlin, 1915, 844-847.
[8] Einstein, A. (1916) Die Grundlage der allgemeinen Relativit?tstheorie. Annalen der Physik, 354, 769-822. http://dx.doi.org/10.1002/andp.19163540702
[9] Chandrasekhar, S. (1935) The Highly Collapsed Configurations of a Stellar Mass (Second Paper). Monthly Notices of the Royal Astronomical Society, 95, 207-225.
[10] Shapiro, S.L. and Teukolsky, S.A. (1983) Black Holes, White Dwarfs, and Neutron Stars. The Physics of Compact Objects. John Wiley and Sons, New York. http://dx.doi.org/10.1002/9783527617661
[11] Tolman, R.C. (1969) Relativity, Thermodynamics, and Cosmology. Clarendon Press, Oxford.