[求助]文献查找！

rxdhjd

哪位大侠帮忙查找一下下面三篇文献，都是有关离心压缩机的，万分感谢！！
& o' f8 }* t8 p+ {, O# D( [; j7 i/ cJohnson M W Moore J.
) L" v# D( i% `7 ^9 h. |7 |The Development of wake flow in a centrifugal impeller ASME Journal of Engineering for power1980 102:382~390
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$ t: u! q0 o) }2 R! sKrain H.A
Study on centrifugal impler and diffuser flow ASME journal of Engineering for power 1981,103:688~697

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Eckardt D.
Detailed flow investigation within a high-speed centrifugal compressor impeller ASME Journal of Fluid Eng