Let K (resp. L) be a Montesinos knot (resp. link) with at least four branches. Then we show the unknotting number (resp. unlinking number) of K (resp. L) is greater than 1.
@article{urn:eudml:doc:44205, title = {A note on unlinking numbers of Montesinos links.}, journal = {Revista Matem\'atica de la Universidad Complutense de Madrid}, volume = {9}, year = {1996}, pages = {151-164}, zbl = {0884.57007}, mrnumber = {MR1413272}, language = {en}, url = {http://dml.mathdoc.fr/item/urn:eudml:doc:44205} }
Motegi, K. A note on unlinking numbers of Montesinos links.. Revista Matemática de la Universidad Complutense de Madrid, Tome 9 (1996) pp. 151-164. http://gdmltest.u-ga.fr/item/urn:eudml:doc:44205/