From Pattern Notes:

“I love to solve problems… and to knit. This sock design was developed as a solution to two irksome issues: socks with a plain stocking-stitch leg tend to fall down, and I find k1p1 ribbing tedious. And so,the basic ribbed sock was born.”

Pattern is available in several places:

• Archived Spun Magazine

• Kate Atherley Knits blog - By Popular Demand: Basic Ribbed Sock with notes for resizing also available.