| article html file updated | 9 February 2020 16:00 CET | Update | https://www.mdpi.com/2227-9059/6/2/49 |
| article html file updated | 3 October 2019 03:55 CEST | Update | - |
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| article html file updated | 27 June 2018 19:15 CEST | Update | - |
| article pdf uploaded. | 2 May 2018 10:35 CEST | Updated version of record | https://www.mdpi.com/2227-9059/6/2/49/pdf |
| article html file updated | 2 May 2018 06:18 CEST | Original file | - |
| article pdf uploaded. | 2 May 2018 06:17 CEST | Updated version of record | - |
| article xml uploaded. | 2 May 2018 06:17 CEST | Update | https://www.mdpi.com/2227-9059/6/2/49/xml |
| article xml file uploaded | 2 May 2018 06:17 CEST | Update | - |
| article xml file uploaded | 1 May 2018 15:20 CEST | Original file | - |
