• A Journey into the Nonlinear World : [a book]Engelbrecht, Jüri2024 https://doi.org/10.1007/978-3-031-63922-7 https://www.ester.ee/record=b5733742*est
• PrefaceEngelbrecht, JüriA Journey into the Nonlinear World2024 / p. IX-X https://www.ester.ee/record=b5733742*est https://doi.org/10.1007/978-3-031-63922-7