Hawaii. Legislature. Legislative Reference Bureau.
Maryland. Task Force to Study Moving Overhead Utility Lines Underground
Virginia. State Corporation Commission.
Rosalind H. Williams
David Macaulay
Larry Richards
International Conference on Underground Infrastructure Research (1st 1988 Washington, D.C.)
Közműalagút-Közműfolyosó Ankét Budapest, Hungary 1976.
American Public Works Association.
Oelberg, Gusztáv.
American Public Works Association. Research Foundation.
San Francisco (Calif.). Utility Undergrounding Task Force.
Building Systems International
International Conference on Underground Infrastructure Research (2001 Kitchener, Ontario, Canada)
Otton Dąbrowski
Rolf Bielecki
John D. Trew
Robert F. Durnford