New integrable ( $$3+1$$ 3 + 1 )-dimensional systems and contact geometry
Crossref DOI link: https://doi.org/10.1007/s11005-017-1013-4
Published Online: 2017-10-20
Published Print: 2018-02
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Sergyeyev, A.
License valid from 2017-10-20