| article html file updated | 8 February 2020 04:20 CET | Update | https://www.mdpi.com/2227-7102/7/2/49 |
| article html file updated | 24 September 2019 12:02 CEST | Update | - |
| article html file updated | 4 May 2019 00:50 CEST | Update | - |
| article html file updated | 27 October 2017 09:58 CEST | Update | - |
| article html file updated | 25 April 2017 16:01 CEST | Update | - |
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| article html file updated | 25 April 2017 16:01 CEST | Original file | - |
| article xml uploaded. | 25 April 2017 15:59 CEST | Original file | https://www.mdpi.com/2227-7102/7/2/49/xml |
| article pdf uploaded. | 25 April 2017 15:59 CEST | Version of Record | https://www.mdpi.com/2227-7102/7/2/49/pdf |
