TY - GEN TY - GEN T1 - A characterization of the periodicity of bi-infinite words T2 - TUCS technical report A1 - Harju, Tero, 1952- A2 - Lepistö, Arto, 1952- A2 - Nowotka, Dirk LA - eng PP - Turku PB - Turku Centre for Computer Science YR - 2003 UL - https://kansalliskirjasto.finna.fi/Record/fikka.3990299 SN - 952-12-1204-7 nidottu ER -