| article html file updated | 14 August 2026 18:35 CEST | Update | https://www.mdpi.com/2227-7080/5/4/70 |
| article html file updated | 8 February 2020 19:32 CET | Update | N/A |
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| article xml uploaded. | 27 October 2017 04:59 CEST | Original file | https://www.mdpi.com/2227-7080/5/4/70/xml |
| article pdf uploaded. | 27 October 2017 04:59 CEST | Updated version of record | https://www.mdpi.com/2227-7080/5/4/70/pdf |
| article pdf uploaded. | 26 October 2017 11:58 CEST | Version of Record | https://www.mdpi.com/2227-7080/5/4/70/pdf-vor |
