[MSDN Library June 1998] Ellipse (38.9952153110048%)

MSDN Library Visual Studio 6.0 > Platform SDK > Graphics and Multimedia Services > GDI > Filled Shapes > Filled Shape Reference > Filled Shape Functions

[MSDN Library April 2000] Ellipse (38.9952153110048%)

MSDN Library - April 2000 > Platform SDK > Graphics and Multimedia Services > Windows GDI > Filled Shapes > Filled Shape Reference > Filled Shape Functions

[MSDN Library June 1998] ELLIPSE.H (6.56067251461988%)

MSDN Library Visual Studio 6.0 > Platform SDK > Reference > Code Samples > GRAPHICS > OPENGL > DEMOS > STONEHNG

[MSDN Library June 1998] ELLIPSE.CXX (6.05562200956938%)

MSDN Library Visual Studio 6.0 > Platform SDK > Reference > Code Samples > GRAPHICS > OPENGL > DEMOS > STONEHNG