Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Mizuno M. and Iwao T.,Standard Specifications of Middle Performance Concrete for Highway Tunnels,Concrete Journal,03871061,Japan Concrete Institute,2014,52,2,171-178,https://cir.nii.ac.jp/crid/1390282679519226880,https://doi.org/10.3151/coj.52.171