»Overall, Marxen’s Demand Guarantees is a sound piece of comparative research. It is comprehensive. Anyone who would like to explore the doctrines underlying demand guarantees, with reference to their abuse, up until the end of 2017 need only to look at this book. What the book does do to a highly exceptional standard is take a concise area of law dealing with certain principles, analysing them to a very high degree and presenting them in a manner that is understandable to those working in the field and who would have to make assessments on a complex area of law.«
Faadhil Adams, Journal of South African Law 2/2020, 399