| article html file updated | 9 February 2020 13:13 CET | Update | https://www.mdpi.com/2075-4442/6/2/33 |
| article html file updated | 2 October 2019 11:11 CEST | Update | - |
| article html file updated | 1 May 2019 04:40 CEST | Update | - |
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| article html file updated | 27 June 2018 10:04 CEST | Update | - |
| article html file updated | 10 April 2018 16:23 CEST | Original file | - |
| article xml uploaded. | 10 April 2018 16:21 CEST | Original file | https://www.mdpi.com/2075-4442/6/2/33/xml |
| article pdf uploaded. | 10 April 2018 16:21 CEST | Version of Record | https://www.mdpi.com/2075-4442/6/2/33/pdf |
