| article html file updated | 14 August 2026 19:27 CEST | Update | https://www.mdpi.com/2227-7390/5/4/69 |
| article html file updated | 8 February 2020 22:03 CET | Update | N/A |
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| article xml uploaded. | 24 November 2017 10:44 CET | Original file | https://www.mdpi.com/2227-7390/5/4/69/xml |
| article pdf uploaded. | 24 November 2017 10:44 CET | Updated version of record | https://www.mdpi.com/2227-7390/5/4/69/pdf |
| article pdf uploaded. | 23 November 2017 12:27 CET | Version of Record | https://www.mdpi.com/2227-7390/5/4/69/pdf-vor |
