| article html file updated | 9 February 2020 13:54 CET | Update | https://www.mdpi.com/2075-4701/8/4/271 |
| article html file updated | 1 May 2019 03:20 CEST | Update | - |
| article html file updated | 17 April 2019 03:45 CEST | Update | - |
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| article html file updated | 1 May 2018 08:06 CEST | Update | - |
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| article html file updated | 17 April 2018 10:21 CEST | Update | - |
| article xml uploaded. | 17 April 2018 10:19 CEST | Update | https://www.mdpi.com/2075-4701/8/4/271/xml |
| article pdf uploaded. | 17 April 2018 10:19 CEST | Updated version of record | https://www.mdpi.com/2075-4701/8/4/271/pdf |
| article html file updated | 17 April 2018 09:25 CEST | Original file | - |
| article pdf uploaded. | 17 April 2018 09:24 CEST | Updated version of record | - |
