The aim of this paper is to describe the process of semiautomatic generation of multilingual lecture notes in form of Wikipedia books. In particular, we study the case of the generation of lecture notes for undergraduate courses on Algorithms and Data Structures in different languages: German, English, Spanish. The benefit and support of Wikipedia books and multimediabased teaching in a course on Algorithms and Data Structures was described in an earlier paper. Furthermore, we explain the advantage of Wikipedia books to support the blended learning process using modern mobile devices in multicultural and multilingual environments. We will describe the multilingual production, benefits, form, style and contents of those Wikipedia books. Planned languages of Wikipedia Books for Algorithms and Data Structures: • German, English, Spanish, French, Italian, Portuguese, Chinese, . . . . Planned topics of further Wikipedia Books: • Algorithms and Data Structures • Computer Graphics • Multimedia Technology • Image Processing • Smart Graphics • Computer and Network Forensics