Pseudo-inversion: closure properties and decidability.Published in:Natural Computing, 2016, v. 15, n. 1, p. 31, doi. 10.1007/s11047-015-9502-9By:Cho, Da-Jung;Han, Yo-Sub;Kang, Shin-Dong;Kim, Hwee;Ko, Sang-Ki;Salomaa, KaiPublication type:Article