00508     2200193   4500001002100000005001500021035002000036008004100056245004400097100001800141250001100159260003200170300002800202020001500230084001800245082001200263650002500275990001400300INLIS00000000000043920260811125617  a0010-0317000437260811                           0      1 aAn Introduction to difference equations  aElaydi, Saber  a3rd ed  aNew York :bSpringer,c2005  axxii, 539 hlm. ;c25 cm  a0387230599  a515.625 Ela i  a515.625  aDIFFERENCE EQUATIONS  a072907212