@article{1993-moree-squares
,author={Pieter Moree}
,ISSN={0025--2611}
,journal={Manuscripta Mathematica}
,MR={94g:11069}
,pages={199--211}
,title={{On the number of $y$-smooth natural numbers $\le x$ representable as a sum of two integer squares}}
,volume={80}
,year={1993}
}