@article{BMMS_2008_31_2_a2,
     author = {M. H. M. Rashid and M. S. M. Noorani and A. S. Saari},
     title = {On the {Spectra} of {Some} {Non-Normal} {Operators}},
     journal = {Bulletin of the Malaysian Mathematical Society},
     year = {2008},
     volume = {31},
     number = {2},
     url = {http://geodesic.mathdoc.fr/item/BMMS_2008_31_2_a2/}
}