Moore, J.G.; Morgan, M.T.; McDaniel, E.W.; Greene, H.B. & West, G.A. Cement technology for plugging boreholes in radioactive-waste-repository sites. Progress report, October 1, 1978-September 30, 1979, report, August 1, 1980; (https://digital.library.unt.edu/ark:/67531/metadc1206748/m1/1/: accessed March 19, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .