| article html file updated | 12 August 2026 20:06 CEST | Update | https://www.mdpi.com/1911-8074/5/1/20 |
| article html file updated | 6 February 2020 04:05 CET | Update | N/A |
| article html file updated | 8 May 2019 01:04 CEST | Update | N/A |
| article html file updated | 21 March 2019 03:51 CET | Update | N/A |
| article html file updated | 25 July 2017 06:24 CEST | Original file | N/A |
| article xml uploaded. | 25 July 2017 06:23 CEST | Original file | https://www.mdpi.com/1911-8074/5/1/20/xml |
| article pdf uploaded. | 29 August 2013 17:09 CEST | Version of Record | https://www.mdpi.com/1911-8074/5/1/20/pdf |