"The discussions in this book are brief and technical, so it will probably be of most interest to readers who are already familiar with other types of quantum groups but would like to get some idea of what is new or different in elliptic quantum groups." (Robert Harold McRae, Mathematical Reviews, April, 2022) "The presentation is as well very recommendable as a brief introduction to the subject." (Sonia Natale, zbMATH 1467.17001, 2021)