| article html file updated | 14 August 2026 23:54 CEST | Update | https://www.mdpi.com/2076-0787/7/2/31 |
| article html file updated | 9 February 2020 11:40 CET | Update | N/A |
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| article xml uploaded. | 30 March 2018 11:39 CEST | Original file | https://www.mdpi.com/2076-0787/7/2/31/xml |
| article pdf uploaded. | 30 March 2018 11:39 CEST | Updated version of record | https://www.mdpi.com/2076-0787/7/2/31/pdf |
| article pdf uploaded. | 28 March 2018 17:52 CEST | Version of Record | https://www.mdpi.com/2076-0787/7/2/31/pdf-vor |
