| article html file updated | 9 February 2020 06:08 CET | Update | https://www.mdpi.com/2076-328X/8/2/23 |
| article html file updated | 30 September 2019 16:25 CEST | Update | - |
| article html file updated | 1 May 2019 19:33 CEST | Update | - |
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| article html file updated | 14 March 2018 08:26 CET | Update | - |
| article html file updated | 9 February 2018 17:24 CET | Original file | - |
| article xml uploaded. | 9 February 2018 17:23 CET | Original file | https://www.mdpi.com/2076-328X/8/2/23/xml |
| article pdf uploaded. | 9 February 2018 17:23 CET | Version of Record | https://www.mdpi.com/2076-328X/8/2/23/pdf |
