On $D$ sot hat $x^2-D{y}^2$ represents $m$ and $-m$ and not $-1$.

Robertson, John P.. "On sot hat represents and and not .." Acta Mathematica Academiae Paedagogicae Nyí regyháziensis. New Series [electronic only] 25.2 (2009): 155-164. <http://eudml.org/doc/232531>.

@article{Robertson2009,
author = {Robertson, John P.},
journal = {Acta Mathematica Academiae Paedagogicae Nyí regyháziensis. New Series [electronic only]},
keywords = {generalized Pell equation; simultaneous Pell equations; representation},
language = {eng},
number = {2},
pages = {155-164},
publisher = {Bessenyei György College, Department of Mathematics},
title = {On sot hat represents and and not .},
url = {http://eudml.org/doc/232531},
volume = {25},
year = {2009},
}

TY - JOUR
AU - Robertson, John P.
TI - On sot hat represents and and not .
JO - Acta Mathematica Academiae Paedagogicae Nyí regyháziensis. New Series [electronic only]
PY - 2009
PB - Bessenyei György College, Department of Mathematics
VL - 25
IS - 2
SP - 155
EP - 164
LA - eng
KW - generalized Pell equation; simultaneous Pell equations; representation
UR - http://eudml.org/doc/232531
ER -