| article html file updated | 14 August 2026 23:52 CEST | Update | https://www.mdpi.com/1999-4907/9/4/169 |
| article html file updated | 9 February 2020 11:32 CET | Update | N/A |
| article html file updated | 2 October 2019 01:00 CEST | Update | N/A |
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| article html file updated | 28 March 2018 18:50 CEST | Update | N/A |
| article xml uploaded. | 28 March 2018 18:48 CEST | Update | https://www.mdpi.com/1999-4907/9/4/169/xml |
| article pdf uploaded. | 28 March 2018 18:48 CEST | Updated version of record | https://www.mdpi.com/1999-4907/9/4/169/pdf |
| article html file updated | 28 March 2018 02:51 CEST | Original file | N/A |
| article pdf uploaded. | 28 March 2018 02:49 CEST | Updated version of record | https://www.mdpi.com/1999-4907/9/4/169/pdf-vor |
| article pdf uploaded. | 27 March 2018 18:09 CEST | Version of Record | https://www.mdpi.com/1999-4907/9/4/169/pdf-vor |
