| article html file updated | 8 February 2020 21:51 CET | Update | https://www.mdpi.com/2073-4395/7/4/77 |
| article html file updated | 28 September 2019 15:51 CEST | Update | - |
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| article html file updated | 22 November 2017 09:20 CET | Original file | - |
| article xml uploaded. | 22 November 2017 09:19 CET | Original file | https://www.mdpi.com/2073-4395/7/4/77/xml |
| article pdf uploaded. | 22 November 2017 09:19 CET | Version of Record | https://www.mdpi.com/2073-4395/7/4/77/pdf |
