- document
- Hughes, Michael J. (author), Weems, Kenneth M. (author) conference paper 2011
- document
- Bertram, Volker (author), Hughes, Michael (author) report 1995
- document
- Hughes, Michael (author) report 1995
- document
- Hughes, G. (author) report
- document
- Hughes, G. (author) report 1968
- document
- Hughes, G. (author) report 1967
- document
- Hughes, G. (author) report 1967
- document
- Hughes, G. (author) report 1962
- document
- Hughes, G. (author) report 1962
- document
- Hughes, G. (author) report 1961
- document
- Hughes, G. (author) report 1956
- document
- Hughes, G. (author), Wieghardt, K. (author) journal article 1955
- document
- Hughes, G. (author) conference paper 1954
- document
- Hughes, G. (author) report 1954
- document
- Hughes, G. (author) report 1930