?url_ver=Z39.88-2004&rft_id=10.1007%2F978-981-15-5753-8%E2%82%83%E2%82%82&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Alam&rft.au=Alam%2C+M.A.&rft.aufirst=M.A.&rft.title=Lecture+Notes+in+Mechanical+Engineering&rft.date=2020&rft.issn=21954356&rft.isbn=9789811557521&rft.atitle=Experimental+investigations+on+the+surface+hardness+of+synthesized+polystyrene%2Fzno+nanocomposites&rft.pages=345-352&rft.genre=article