| article html file updated | 9 February 2020 00:04 CET | Update | https://www.mdpi.com/2075-4442/5/4/47 |
| article html file updated | 29 September 2019 05:07 CEST | Update | N/A |
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| article html file updated | 18 April 2019 06:22 CEST | Update | N/A |
| article html file updated | 2 January 2018 14:35 CET | Update | N/A |
| article html file updated | 14 December 2017 09:38 CET | Original file | N/A |
| article xml uploaded. | 14 December 2017 09:37 CET | Original file | https://www.mdpi.com/2075-4442/5/4/47/xml |
| article pdf uploaded. | 14 December 2017 09:37 CET | Version of Record | https://www.mdpi.com/2075-4442/5/4/47/pdf |
