Kuzmin, Yaroslav V.; Speakman, Robert Jeff; Glascock, Michael D.; Popov, Vladimir K.; Grebennikov, Andrei V.; Dikova, Margarita A.; Ptashinsky, Andrei V.(2008)
Lopez-del-Rio, H.; Mireles-Garcia, F.; Mendez-Cardona, R. Y.; Nicolas-Caretta, M.; Speakman, Robert Jeff; Glascock, Michael D.(OLDENBOURG VERLAG, 2009)
Tsang, Jia-sun; Madden, Odile; Coughlin, Mary; Maiorana, Anthony; Watson, Judy; Little, Nicole C.; Speakman, Robert Jeff(International Institute for Conservation of Historic and Artistic Works, 2009)
Pohl, Christie M.; Hodgins, Greg; Speakman, Robert Jeff; Beaubien, Harriet F.(American Institute for Conservation of Historic and Artistic Works, 2009)