TY - JOUR AU - Oto Strauch AU - János Tóth TI - Asymptotic density of A⊂ ℕ and density of the ratio set R(A) JO - Acta Arithmetica PY - 1998 SP - 67 EP - 78 VL - 87 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/aa-87-1-67-78/ DO - 10.4064/aa-87-1-67-78 LA - en ID - 10_4064_aa_87_1_67_78 ER -