Chadia Affane-Aji Saad Biaz N. K. Govil On annuli containing all the zeros of a polynomial. 1532-1537 2010 52 Mathematical and Computer Modelling 9-10 http://dx.doi.org/10.1016/j.mcm.2010.06.014 db/journals/mcm/mcm52.html#Affane-AjiBG10