. . . . . . "Dark pools, flash orders, high-frequency trading, and other market structure issues : hearing before the Subcommittee on Securities, Insurance, and Investment of the Committee on Banking, Housing, and Urban Affairs, United States Senate, One Hundred Eleventh Congress, first session, on examining the dark pools, flash orders, high-frequency trading, and other market structure issues, October 28, 2009"@en . . . . . . . . . "Dark pools, flash orders, high-frequency trading, and other market structure issues hearing before the Subcommittee on Securities, Insurance, and Investment of the Committee on Banking, Housing, and Urban Affairs, United States Senate, One Hundred Eleventh Congress, first session ... October 28, 2009"@en . . . . .