| article html file updated | 15 August 2026 11:18 CEST | Update | https://www.mdpi.com/2227-9040/6/4/56 |
| article html file updated | 10 February 2020 22:54 CET | Update | N/A |
| article html file updated | 10 October 2019 21:11 CEST | Update | N/A |
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| article html file updated | 26 December 2018 09:28 CET | Update | N/A |
| article html file updated | 29 November 2018 04:27 CET | Original file | N/A |
| article pdf uploaded. | 29 November 2018 04:25 CET | Updated version of record | https://www.mdpi.com/2227-9040/6/4/56/pdf |
| article xml uploaded. | 29 November 2018 04:25 CET | Update | https://www.mdpi.com/2227-9040/6/4/56/xml |
| article xml file uploaded | 29 November 2018 04:25 CET | Update | N/A |
| article pdf uploaded. | 22 November 2018 18:36 CET | Updated version of record | https://www.mdpi.com/2227-9040/6/4/56/pdf-vor |
| article pdf uploaded. | 22 November 2018 18:31 CET | Version of Record | https://www.mdpi.com/2227-9040/6/4/56/pdf-vor |
| article xml file uploaded | 22 November 2018 18:31 CET | Original file | N/A |
