KRAKEN collaborated in one of the chapters "KRAKEN: A Secure, Trusted, Regulatory-Compliant, and Privacy-Preserving Data Sharing Platform". This is an open access book, meaning you can log in for free and unlimited to read as many times as you want.
The purpose of this publication is to educate dataspace designers to understand what it takes to create a successful dataspace. It explores the theory, technologies, methodologies and best practices at the forefront of data spaces while capturing lessons and experiences in creating data spaces based on real-world projects in various industry sectors.
In the following link you can take a look at the book.