Szepietowski, A. The element distinctness problem on one-tape Turing machines. Information processing letters..
Lua i Stíl Chicago (17ú heag.)Szepietowski, Andrzej. "The Element Distinctness Problem on One-tape Turing Machines." Information Processing Letters. .
Lua MLA (9ú heag.)Szepietowski, Andrzej. "The Element Distinctness Problem on One-tape Turing Machines." Information Processing Letters., .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.