TY JOUR TI Quality in the audit KW audit of financial statements KW audit services KW audit quality KW intended users of the professional opinion of the auditor KW requirements for quality audit KW necessary quality level KW a sufficient level of quality KW confidence in quality KW sufficient appropriate audit evidence JO Auditor AU Itygilova, E.. AU Bychkova, S.M. PY 2014 IS 0 PB INFRA-M Academic Publishing LLC.