| article html file updated | 29 August 2025 20:58 CEST | Update | https://www.mdpi.com/2075-1729/4/1/66 |
| article html file updated | 15 July 2022 22:53 CEST | Update | - |
| article html file updated | 6 February 2020 07:27 CET | Update | - |
| article html file updated | 20 September 2019 06:06 CEST | Update | - |
| article html file updated | 7 May 2019 18:16 CEST | Update | - |
| article html file updated | 21 March 2019 12:48 CET | Update | - |
| article html file updated | 19 August 2015 21:27 CEST | Update | - |
| article html file updated | 26 August 2014 04:21 CEST | Update | - |
| article xml file uploaded | 26 August 2014 04:21 CEST | Update | https://www.mdpi.com/2075-1729/4/1/66/xml |
| article html file updated | 24 June 2014 12:13 CEST | Original file | - |
| article xml file uploaded | 24 June 2014 12:13 CEST | Original file | - |
| article pdf uploaded. | 21 February 2014 16:22 CET | Version of Record | https://www.mdpi.com/2075-1729/4/1/66/pdf |