| article html file updated | 12 July 2023 07:15 CEST | Update | https://www.mdpi.com/2227-7102/8/1/12 |
| article xml uploaded. | 12 July 2023 07:14 CEST | Update | https://www.mdpi.com/2227-7102/8/1/12/xml |
| article pdf uploaded. | 12 July 2023 07:14 CEST | Updated version of record | https://www.mdpi.com/2227-7102/8/1/12/pdf |
| article html file updated | 9 February 2020 02:49 CET | Update | - |
| article html file updated | 2 May 2019 02:44 CEST | Update | - |
| article html file updated | 18 April 2019 00:57 CEST | Update | - |
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| article html file updated | 27 March 2018 15:17 CEST | Update | - |
| article html file updated | 12 January 2018 09:06 CET | Original file | - |
| article xml uploaded. | 12 January 2018 09:05 CET | Original file | - |
| article pdf uploaded. | 12 January 2018 09:05 CET | Version of Record | https://www.mdpi.com/2227-7102/8/1/12/pdf-vor |
