Yasser Ganjisaffar Kyumars Sheykh Esmaili M. Ghodsi Hassan Abolhassani Parallel Online Ranking of Web Pages. 104-109 2006 AICCSA http://ieeexplore.ieee.org/xpls/abs_all.jsp?isnumber=33913&arnumber=1618340&count=182&index=15 conf/aiccsa/2006 db/conf/aiccsa/aiccsa2006.html#SaffarEGA06