2[9]Lin C C, Bertin. G in The Milky Way Galaxy[C]. Van Woerden, (IAU) 1985,513.
3[10]Lou Yu-Qing, Yuan Chi, Fan Zuhui. Spiral magnetohydrodynamic density waves with a tangential shear force[J]. ApJ 2001, 552(1): 189-197.
4[11]Lou Yu-Qing, Walsh W M, Han J L, et al. Multiwavelength structural manifestations of fast magnetohydrodynamic density waves in spiral galaxies[J]. ApJ. 2002, 567(1): 289-298.
5[12]Yuan Chi. Resonantly excited non-linear density waves in disk systems[J]. Space Science Rev, 2002, 102(1): 121-128.
6[13]Miller R H, Prendergast K H, Quirk W J. Numerical experiments on spiral structure[J]. ApJ, 1970,161:903.
7[14]Sellwood J A, Carlberg R G.. Spiral instabilities proved by accretion and star formation[J]. ApJ, 1984, 282(1):61-74.
8[16]Zhang Yi-fang (Y F Chang). A nonlinear dynamical model of formation of binary stars from a nebula[J]. Chinese Astro Astrophys (UK), 2000, 24:269-274.
9[17]R Steinitz, N Farbiash. Spectroscopically and Spatially Resolving the Components of close Binary Stars[C]. ASP Conference Series. in Dubrovnik, Croatia, 2003.