This is the company of Alex Pelsmaeker, see https://www.utwente.nl/nl/ufonds/prijzen-en-beurzen/prijzen/interview-alex-pelsmaeker/
He worked with his graduation professor Kasper Boon, who was an author of computer books. Pelsmaeker wrote the actual programs published in their box, but Boon had the ideas and wrote the texts.
They worked together with Addison-Wesley.
