Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Toyokawa Masahiro and Asari Seishi and Horikawa Masayuki and Tsukamoto Hisako and Tahara Kazuko and Sunada Atsuko and Amino Nobuyuki,Problems in the checkerboard method using serial twofold dilutions.,CHEMOTHERAPY,0009-3165,Japanese Society of Chemotherapy,1994,42,7,841-848,https://cir.nii.ac.jp/crid/1390282681255978368,https://doi.org/10.11250/chemotherapy1953.42.841