This site is introduced in
Bounds of rotated egg? ,
Principal room ,
[Curve-12] Let's draw an egg curve ,
GENERATING AVIAN EGG USING RATIONAL BEZIER QUADRATIC CURVES .
As seen by looking at each site or treatise, the author's name written in it is "jukuchou and Yamamoto", "Yamamoto".
On the otherhand, the address of this site has passed
"http://www16.ocn.ne.jp:80/~akiko-/Egg_by_SuudokuJuku/index_egg_by_SuudokuJuku_E.html" , "http://www.geocities.jp/nyjp07/Egg_by_SuudokuJuku/index_egg_by_SuudokuJuku_E.html" , "http://www.geocities.jp/nyjp07/index_egg_by_SuudokuJuku_E.html"
and becomes the current "http://nyjp07.com/index_egg_by_SuudokuJuku_E.html" .
We can't use the old address, but searching for old addresses with a free
Internet Archive search B> may reveal the site at the time it was saved.