Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) NOZAKI Yoshitsugu and SOSHIRODA Tomozo and KOBAYASHI Koichi,"APPLICATION OF ULTRASONIC, REBOUND AND COMBINED METHOD TO EXISTING STRUCTURES : Estimation of strength of concrete in structures by non-destructive testing Part 2",Journal of Structural and Construction Engineering (Transactions of AIJ),09108025,Architectural Institute of Japan,1993,444,0,1-6,https://cir.nii.ac.jp/crid/1390282680580790656,https://doi.org/10.3130/aijsx.444.0_1