Join us

Author: Henk Koppelaar

Publications

Publication period start: 1974

Publications

Koppelaar, Henk (1974): Hypergeometric (Certification and Remark on Algorithm 191). In Communications of the ACM, 17 (10) pp. 589-590.

New to UX Design? We're Giving You a Free eBook!

The Basics of User Experience Design

Download our free ebook “The Basics of User Experience Design” to learn about core concepts of UX design.

In 9 chapters, we'll cover: conducting user interviews, design thinking, interaction design, mobile UX design, usability, UX research, and many more!

A valid email address is required.
327,342 designers enjoy our newsletter—sure you don't want to receive it?