| article html file updated | 18 March 2021 08:26 CET | Update | https://www.mdpi.com/1648-9144/54/2/21 |
| article html file updated | 9 February 2020 15:11 CET | Update | N/A |
| article html file updated | 2 October 2019 22:55 CEST | Update | N/A |
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| article html file updated | 24 April 2018 16:45 CEST | Original file | N/A |
| article pdf uploaded. | 24 April 2018 16:44 CEST | Version of Record | https://www.mdpi.com/1648-9144/54/2/21/pdf |
| article xml uploaded. | 24 April 2018 16:44 CEST | Update | https://www.mdpi.com/1648-9144/54/2/21/xml |
| article xml file uploaded | 24 April 2018 16:44 CEST | Original file | N/A |
