download file using wget

I need to download the following srs8.3.0.1.standard.linux26_32.tar.gz file from the following website:

http://downloads.biowisdomsrs.com/srs83_dist

There are many gzip files along with the above one in the above site but I want to download the srs8.3.0.1.standard.linux26_32.tar.gz only from the website.

wget http://downloads.biowisdomsrs.com/srs83_dist -nd -P SRS_drop_area -N -r -l 1
--http-user=$hu --http-passwd=$hp \
--proxy-user=$pu --proxy-passwd=$pp \
--proxy=on
But it is downloading all the zipped files one after another but I want to download the srs8.3.0.1.standard.linux26_32.tar.gz only

How do I do that..
Please help

wget http://downloads.biowisdomsrs.com/srs83_dist/srs8.3.0.1.standard.linux26_32.tar.gz