| article html file updated | 9 February 2020 07:14 CET | Update | https://www.mdpi.com/2078-2489/9/2/42 |
| article html file updated | 30 September 2019 22:52 CEST | Update | - |
| article html file updated | 1 May 2019 17:09 CEST | Update | - |
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| article html file updated | 14 March 2018 11:36 CET | Update | - |
| article html file updated | 22 February 2018 10:57 CET | Original file | - |
| article xml uploaded. | 22 February 2018 10:56 CET | Original file | https://www.mdpi.com/2078-2489/9/2/42/xml |
| article pdf uploaded. | 22 February 2018 10:56 CET | Version of Record | https://www.mdpi.com/2078-2489/9/2/42/pdf |
