| ieeexplore.ieee.org | 1846 |
| link.springer.com | 388 |
| dl.acm.org | 259 |
| www.computer.org | 193 |
| www.sciencedirect.com | 139 |
| linkinghub.elsevier.com | 54 |
| www.worldscientific.com | 18 |
| arxiv.org | 15 |
| www.ncbi.nlm.nih.gov | 14 |
| www.crossref.org | 11 |
| www.spiedigitallibrary.org | 9 |
| onlinelibrary.wiley.com | 7 |
| www.nature.com | 6 |
| www.mitpressjournals.org | 5 |
| mr.crossref.org | 5 |
| jivp-eurasipjournals.springeropen.com | 4 |
| www.tandfonline.com | 3 |
| www.inderscience.com | 2 |
| www.hindawi.com | 2 |
| www.scitepress.org | 2 |
| epubs.siam.org | 1 |
| www.jstage.jst.go.jp | 1 |
| annals-csis.org | 1 |
| ora.ox.ac.uk | 1 |
| www.emeraldinsight.com | 1 |
| spiral.imperial.ac.uk:8443 | 1 |
| autosoftjournal.net | 1 |
| www.liebertpub.com | 1 |