@article{hrj:114,
    title      = {On Waring's Problem: $g(4)\leq20.$},
    author     = {R Balasubramanian},
    url        = {https://hrj.episciences.org/114},
    doi        = {10.46298/hrj.1985.114},
    journal    = {Hardy-Ramanujan Journal},
    issn       = {2804-7370},
    volume     = {Volume 8 - 1985},
    eid        = 1,
    year       = {1985},
    month      = {Jan},
    keywords   = {minor arc, multiplicative function, lower bounds, sum of biquadrates, [MATH]Mathematics [math]},
    language   = {English},
}