| article html file updated | 11 February 2020 21:41 CET | Update | https://www.mdpi.com/1911-8074/12/1/42 |
| article html file updated | 16 October 2019 11:27 CEST | Update | - |
| article html file updated | 26 April 2019 04:21 CEST | Update | - |
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| article html file updated | 14 March 2019 04:39 CET | Original file | - |
| article pdf uploaded. | 14 March 2019 04:38 CET | Updated version of record | https://www.mdpi.com/1911-8074/12/1/42/pdf |
| article xml uploaded. | 14 March 2019 04:38 CET | Update | https://www.mdpi.com/1911-8074/12/1/42/xml |
| article xml file uploaded | 14 March 2019 04:38 CET | Update | - |
| article xml file uploaded | 12 March 2019 12:52 CET | Original file | - |