% !TeX program=lualatex
documentclass{scrartcl}

usepackage{fontspec}

usepackage[style=authoryear-comp,backend=biber]{biblatex}

usepackage[main=ngerman,english]{babel}

usepackage{filecontents}

begin{filecontents}{jobname.bib}
    @Article{john1980,
        author  = {M. John},
        title   = {A new view on the wheel},
        journal = {Proceedings in Transportation},
        year    = {1980},
    }
    @Article{john1981,
        author  = {M. John and J. Mary},
        title   = {A new view on the wheel II},
        journal = {Proceedings in Transportation},
        year    = {1981},
    }
end{filecontents}

addbibresource{jobname.bib}

begin{document}
    textcite{john1980,john1981}
    printbibliography

end{document}