documentclass[a4paper,12pt]{article}
usepackage[style=phys]{biblatex}

addbibresource{Literature.bib}

begin{document}
cite{ref1}
cite{own1}
cite{ref2}
cite{own2}

printbibliography
end{document}

@article{ref1,
title = {asdf1},
author = {asdf1}
}

@article{ref2,
title = {asdf2},
author = {asdf2}
}

@article{own1,
title = {asdf},
author = {ME}
}

@article{own2,
title = {asdf},
author = {ME}
}