Functions with (non)timelike gradient on a space-time
Crossref DOI link: https://doi.org/10.3103/S1055134415040021
Published Online: 2015-11-25
Published Print: 2015-10
Update policy: https://doi.org/10.1007/springer_crossmark_policy
BerestovskiÄ, V. N.
Zubareva, I. A.
Text and Data Mining valid from 2015-10-01