Solutions to Diophantine Equation x (x + 1) = y (y + 5) (y + 10) (y + 15)/Historical Note

== Historical Note on Solutions to Diophantine Equation $x \paren {x + 1} = y \paren {y + 5} \paren {y + 10} \paren {y + 15}$ == According to in his  of $1997$, this result appeared in  on page $194$ of volume $7$.

However, this contributor has tried to identify the article in question, and it appears to have nothing to do with the theorem discussed here.