| article html file updated | 9 February 2020 04:33 CET | Update | https://www.mdpi.com/2076-3921/7/2/23 |
| article html file updated | 30 September 2019 06:46 CEST | Update | - |
| article html file updated | 1 May 2019 23:06 CEST | Update | - |
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| article html file updated | 14 March 2018 08:22 CET | Update | - |
| article html file updated | 27 January 2018 06:41 CET | Original file | - |
| article xml uploaded. | 27 January 2018 06:40 CET | Update | https://www.mdpi.com/2076-3921/7/2/23/xml |
| article xml uploaded. | 27 January 2018 06:40 CET | Update | - |
| article xml uploaded. | 27 January 2018 06:40 CET | Original file | - |
| article pdf uploaded. | 27 January 2018 06:40 CET | Version of Record | https://www.mdpi.com/2076-3921/7/2/23/pdf |
