@techreport{TateiwaShinanoYasudaetal.2021, author = {Nariaki Tateiwa and Yuji Shinano and Masaya Yasuda and Shizuo Kaji and Keiichiro Yamamura and Katsuki Fujisawa}, title = {Massively parallel sharing lattice basis reduction}, institution = {ZIB}, address = {Takustr. 7, 14195 Berlin}, number = {21-38}, language = {eng}, year = {2021} }