| article html file updated | 8 February 2020 05:01 CET | Update | https://www.mdpi.com/2227-7102/7/2/53 |
| article html file updated | 3 May 2019 23:34 CEST | Update | - |
| article html file updated | 27 October 2017 09:58 CEST | Update | - |
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| article html file updated | 17 May 2017 04:28 CEST | Original file | - |
| article xml uploaded. | 4 May 2017 14:01 CEST | Update | https://www.mdpi.com/2227-7102/7/2/53/xml |
| article pdf uploaded. | 4 May 2017 14:01 CEST | Version of Record | https://www.mdpi.com/2227-7102/7/2/53/pdf |
