Eriksson K. Angewandte Mathematik: Body and Soul. Band 3 : Analysis in mehreren Dimensionen / K. Eriksson, C. Johnson, D. Estep, 2005 r=on-line. - Текст : электронный.
Hoffman J. Computational turbulent incompressible flow : applied mathematics: body and soul 4 / J. Hoffman, C. Johnson, 2007 r=on-line
Johnson C. Forests for the People. The Story of America’s Eastern National Forests / C. Johnson, D. Govatski, 2013 r=on-line. - Текст : электронный.