中国科学技术信息研究所--国家工程技术数字图书馆

university of cincinnati.(6)

university of california los angeles.(2)

university of illinois at urbana-champaign.(2)

university of notre dame.(2)

california state university fullerton(1)

hong kong university of science and technology (hong kong).(1)

southern illinois university at carbondale.(1)

the university of alabama.(1)

the university of nebraska - lincoln(1)

the university of texas at arlington.(1)

the university of wisconsin - madison.(1)

university of central florida.(1)

university of michigan.(1)

university of minnesota.(1)

university of pittsburgh.(1)

university of toronto (canada).(1)

washington state university.(1)

southern illinois university at carbondale(1)