There’s a typo in the link you shared (an extra “b” at the end) that leads to a page not found. The working link is https://andrewmbailey.com/dkl/Holes.pdf http

There’s a typo in the link you shared (an extra “b” at the end) that leads to a page not found. The working link is https://andrewmbailey.com/dkl/Holes.pdf https://andrewmbailey.com/dkl/Holes.pdf