| 1 |  | Differential equations and dynamical systems / Lawrence Perko . - 2nd ed. -  Boca Raton : Chapman & Hall/CRC, 2008. -  xxxiii, 1108 p. : ill. ; 27 cm. - (  Handbooks of mathematical equations ) Mã xếp giá: 515.45 P76Đăng ký cá biệt: Lầu 2 KLF: 2000007483
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		| 2 |  | Differential equations and dynamical systems / Lawrence Perko . - 3rd ed. -  New York : Springer, 2001. -  xiv, 555 pages ; 24 cm. - (  Texts in Applied Mathematics 7 ) Mã xếp giá: 515.353 P4Đăng ký cá biệt: Lầu 2 KLF: 2000007477
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