| article html file updated | 9 February 2020 10:49 CET | Update | https://www.mdpi.com/2075-4701/8/4/203 |
| article html file updated | 1 October 2019 20:59 CEST | Update | - |
| article html file updated | 1 May 2019 09:38 CEST | Update | - |
| article html file updated | 17 April 2019 09:32 CEST | Update | - |
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| article html file updated | 1 May 2018 07:08 CEST | Update | - |
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| article html file updated | 22 March 2018 13:25 CET | Original file | - |
| article xml uploaded. | 22 March 2018 13:23 CET | Original file | https://www.mdpi.com/2075-4701/8/4/203/xml |
| article pdf uploaded. | 22 March 2018 13:23 CET | Version of Record | https://www.mdpi.com/2075-4701/8/4/203/pdf |
