Medical electrical equipment, Part 2.26: Particular requirements for the basic safety and essential performance of electroencephalographs (IEC 60601-2-26:2012 (ED. 3.0), MOD)
Standard Guidelines for the Design of Urban Subsurface Drainage (ASCE/EWRI 12-05); Standard Guidelines for the Installation of Urban Subsurface Drainage (ASCE/EWRI 13-05); and Standard Guidelines for the Operation and Maintenance of Urban Subsurface Drainage (ASCE/EWRI 14-05)