@article{1967-lander-euler
,author={Leon J. Lander and Thomas R. Parkin}
,ISSN={0025--5718}
,journal={Mathematics of Computation}
,MR={36:3721}
,pages={101--103}
,title={{A counterexample to Euler's sum of powers conjecture}}
,volume={21}
,year={1967}
}