| article html file updated | 30 August 2025 01:23 CEST | Update | https://www.mdpi.com/2227-9040/5/4/28 |
| article html file updated | 16 July 2022 06:44 CEST | Update | N/A |
| article html file updated | 8 February 2020 18:10 CET | Update | N/A |
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| article html file updated | 20 October 2017 08:18 CEST | Update | N/A |
| article xml uploaded. | 20 October 2017 08:17 CEST | Update | https://www.mdpi.com/2227-9040/5/4/28/xml |
| article pdf uploaded. | 20 October 2017 08:17 CEST | Updated version of record | https://www.mdpi.com/2227-9040/5/4/28/pdf |
| article html file updated | 12 October 2017 07:49 CEST | Original file | N/A |
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| article pdf uploaded. | 12 October 2017 07:48 CEST | Updated version of record | https://www.mdpi.com/2227-9040/5/4/28/pdf-vor |
| article pdf uploaded. | 11 October 2017 15:22 CEST | Version of Record | https://www.mdpi.com/2227-9040/5/4/28/pdf-vor |
