| article html file updated | 14 August 2026 17:51 CEST | Update | https://www.mdpi.com/2223-7747/6/4/45 |
| article html file updated | 8 February 2020 17:17 CET | Update | N/A |
| article html file updated | 12 September 2019 11:25 CEST | Update | N/A |
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| article html file updated | 28 September 2017 08:27 CEST | Original file | N/A |
| article xml uploaded. | 28 September 2017 08:26 CEST | Original file | https://www.mdpi.com/2223-7747/6/4/45/xml |
| article pdf uploaded. | 28 September 2017 08:26 CEST | Updated version of record | https://www.mdpi.com/2223-7747/6/4/45/pdf |
| article pdf uploaded. | 27 September 2017 13:56 CEST | Version of Record | https://www.mdpi.com/2223-7747/6/4/45/pdf-vor |
