ROBERTSON, E. And UNLU, Y. 1993. ON SEMIGROUP PRESENTATIONS. PROCEEDINGS OF THE EDINBURGH MATHEMATICAL SOCIETY , vol.36 , 55-68.

ROBERTSON, E., & UNLU, Y., (1993). ON SEMIGROUP PRESENTATIONS. PROCEEDINGS OF THE EDINBURGH MATHEMATICAL SOCIETY , vol.36, 55-68.

ROBERTSON, EF, And Y UNLU. "ON SEMIGROUP PRESENTATIONS," PROCEEDINGS OF THE EDINBURGH MATHEMATICAL SOCIETY , vol.36, 55-68, 1993

ROBERTSON, EF And UNLU, Y. "ON SEMIGROUP PRESENTATIONS." PROCEEDINGS OF THE EDINBURGH MATHEMATICAL SOCIETY , vol.36, pp.55-68, 1993

ROBERTSON, E. And UNLU, Y. (1993) . "ON SEMIGROUP PRESENTATIONS." PROCEEDINGS OF THE EDINBURGH MATHEMATICAL SOCIETY , vol.36, pp.55-68.

@article{article, author={EF ROBERTSON And author={Y UNLU}, title={ON SEMIGROUP PRESENTATIONS}, journal={PROCEEDINGS OF THE EDINBURGH MATHEMATICAL SOCIETY}, year=1993, pages={55-68} }