中国科学技术信息研究所--国家工程技术数字图书馆

university of michigan.(6)

universite de sherbrooke (canada).(5)

the university of western ontario (canada).(4)

university of california berkeley.(4)

university of windsor (canada).(4)

university of illinois at urbana-champaign.(3)

university of toronto (canada).(3)

university of waterloo (canada).(3)

hong kong university of science and technology (hong kong).(2)

hong kong university of science and technology (people's republic of china).(2)

mcmaster university (canada).(2)

queen's university (canada).(2)

syracuse university.(2)

the university of alabama in huntsville.(2)

the university of texas at arlington.(2)

the university of toledo.(2)

university of california berkeley(2)

university of california los angeles.(2)

university of colorado at boulder.(2)

university of illinois at chicago.(2)

university of ottawa (canada).(2)

university of south carolina.(2)

university of toronto (canada)(2)

university of wyoming.(2)

colorado school of mines.(1)

georgia institute of technology(1)

georgia institute of technology.(1)

hong kong polytechnic university (hong kong).(1)

king fahd university of petroleum and minerals (saudi arabia)(1)

michigan state university(1)