Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) HATTORI Junya and YOSHIKAWA Hitoshi,DETERMINATION OF VARIOUS TYPES OF CRACKS IN A 2-D SCALAR WAVE FIELD USING TOPOLOGICAL DERIVATIVE,"Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM))",2185-4661,Japan Society of Civil Engineers,2017,73,2,I_255-I_262,https://cir.nii.ac.jp/crid/1390001205349563904,https://doi.org/10.2208/jscejam.73.i_255