Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Dai-Heng Chen,Equivalent flexural and torsional rigidity of hexagonal honeycomb,Composite Structures,0263-8223,Elsevier BV,2011-06-01,93,,1910-1917,https://cir.nii.ac.jp/crid/1870020692774391040,https://doi.org/10.1016/j.compstruct.2011.02.009