MathSciNet bibliographic data MR1457760 20M14 Rosales, J. C. On presentations of subsemigroups of ${\bf N}\sp n$${\bf N}\sp n$. Semigroup Forum 55 (1997), no. 2, 152–159. Article

For users without a MathSciNet license , Relay Station allows linking from MR numbers in online mathematical literature directly to electronic journals and original articles. Subscribers receive the added value of full MathSciNet reviews.