a little curious about the status of reference
I found a little weird phenomena about the reference shown in the zotero (the firefox version).
See the screenshot I got from my database, (I could not paste a picture, so I uploaded it to my google drive, and shared it to public)
https://plus.google.com/photos/107753268680471966922/albums/5892768435814931361?banner=pwa
I mean, you can see, some of the papers are in a kind of grey color, while others are in real black color, but both of them work fine, no any problem.
I am just curious, what is that mean?
Is anyone know about it?
Thanks
See the screenshot I got from my database, (I could not paste a picture, so I uploaded it to my google drive, and shared it to public)
https://plus.google.com/photos/107753268680471966922/albums/5892768435814931361?banner=pwa
I mean, you can see, some of the papers are in a kind of grey color, while others are in real black color, but both of them work fine, no any problem.
I am just curious, what is that mean?
Is anyone know about it?
Thanks
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Thank you very much for your prompt and concisely explanation.