中国科学技术信息研究所--国家工程技术数字图书馆

university of maryland college park.(7)

the university of tennessee.(6)

state university of new york at buffalo.(4)

ecole polytechnique montreal (canada).(3)

the ohio state university.(3)

university of idaho.(3)

university of michigan.(3)

north carolina state university.(2)

state university of new york at buffalo(2)

texas a&m university.(2)

the pennsylvania state university(2)

the pennsylvania state university.(2)

university of colorado at boulder.(2)

university of massachusetts lowell.(2)

university of nevada las vegas.(2)

university of ontario institute of technology (canada).(2)

university of southern california.(2)

university of toronto (canada)(2)

arizona state university.(1)

arkansas tech university.(1)

brigham young university.(1)

bryn mawr college.(1)

budapest university of technology and economics (hungary)(1)

carleton university (canada).(1)

carnegie mellon university.(1)

concordia university (canada).(1)

drexel university.(1)

georgia institute of technology(1)

harvard university.(1)

iowa state university.(1)