Mughabghab, S.F. & Magurno, B.A. Low energy total cross section of $sup 36$Ar, article, March 1, 1975; (https://digital.library.unt.edu/ark:/67531/metadc1017654/m1/1/: accessed September 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .