TY - JOUR AU - BOURHIM, A. AU - MILLER, V. G. TI - THE SINGLE-VALUED EXTENSION PROPERTY IS NOT PRESERVED UNDER SUMS AND PRODUCTS OF COMMUTING OPERATORS JO - Glasgow mathematical journal PY - 2007 SP - 99 EP - 104 VL - 49 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.1017/S001708950700345X/ DO - 10.1017/S001708950700345X ID - 10_1017_S001708950700345X ER -