@article{PismaZhETF.86.183,
    title = {Disappearing cosmological constant in $f(R)$ gravity},
    author = {Starobinsky, A. A.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {86},
    issue = {3},
    pages = {183},
    year = {2007},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_25926.shtml},
}