00476     2200181   4500001002100000008003900021035002000060245004400080100001800124250001100142260003100153300002600184020001500210084001800225082001200243650002500255990001400280INLIS000000000000439                                   N    a0010-0317000437  aAn Introduction to difference equations  aElaydi, Saber  a3rd ed  aNew York :bSpringerc2005  axxii, 539 hlm.c25 cm  a0387230599  a515.625 Ela i  a515.625  aDIFFERENCE EQUATIONS  a072907212