1 1 10 Proceedings of MIDI’2021–9th Machine Intelligence and Digital Interaction Conference, December 9–10, 2021,Warsaw, Poland Cezary Biele Primary Author Janusz Kacprzyk Primary Author Wiesław Kopeć Primary Author Jan W. Owsiński Primary Author Andrzej Romanowski Primary Author Marcin Sikorski Primary Author mixed material 9783031114328 Cham Springer Nature 2022 978-3-031-11432-8.pdf.jpg.jpg