On the perturbation theory in spatially closed background
Crossref DOI link: https://doi.org/10.1140/epjc/s10052-014-2917-0
Published Online: 2014-06-04
Published Print: 2014-06
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Asgari, Ali A.
Abbassi, Amir H.
Khodagholizadeh, Jafar
License valid from 2014-06-01