References
- [1] UXPin, e-book Web Design Book of Trends 2015 & 2016, Copyright © 2015 by UXPin Inc.
- [2] http://designingfortheweb.co.uk
- [3] UXPin, e-book Mobile Design Book of Trends 2015 & 2016, Copyright © 2015 by UXPin Inc.
© 2016 Luminiţa Giurgiu, Ghiţă Bârsan, published by Nicolae Balcescu Land Forces Academy
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