Kovács, Bálint, Attila Géczy, Gergely Horváth, István Hajdu, and László Gál. 2016. “Advances in Producing Functional Circuits on Biodegradable PCBs”. Periodica Polytechnica Electrical Engineering and Computer Science 60 (4):223-31. https://doi.org/10.3311/PPee.9690.