Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Toshifumi Sakaguchi and Nobuko Fuchikami,Noise-assisted propagation of signals through the chain of level-crossing detectors,SPIE Proceedings,0277-786X,SPIE,2003-05-08,5114,,228,https://cir.nii.ac.jp/crid/1870020693110342016,https://doi.org/10.1117/12.488769