The CD-MAKE Proceedings 2020 are for free available August 25th – September 25th, 2020 here: https://link.springer.com/book/10.1007/978-3-030-57321-8
Accepted papers are published in the conference proceedings by Springer as a volume of the series of Lecture Notes in Computer Science (LNCS) – subseries Lecture Notes in Artificial Intelligence (LNAI).