@article{articlecea2302a,
title   = {Unknotting theorem for 'S POT.O'x'S POT.Q' embeddedin 'S POT.P+Q+2'},
author = {Manzoli Neto, Oziride and Saeki, O and Lucas, L A},
year = {1996},
journal   = {Kobe Journal of Mathematics}
}