| article html file updated | 13 August 2026 11:00 CEST | Update | https://www.mdpi.com/2077-0383/4/1/172 |
| article html file updated | 29 August 2025 21:27 CEST | Update | N/A |
| article html file updated | 20 August 2025 21:56 CEST | Update | N/A |
| article html file updated | 15 July 2022 23:46 CEST | Update | N/A |
| article html file updated | 6 February 2020 15:11 CET | Update | N/A |
| article html file updated | 7 May 2019 02:27 CEST | Update | N/A |
| article html file updated | 25 March 2019 20:31 CET | Update | N/A |
| article html file updated | 21 August 2015 05:52 CEST | Update | N/A |
| article html file updated | 25 June 2015 12:08 CEST | Original file | N/A |
| article xml file uploaded | 25 June 2015 12:08 CEST | Original file | https://www.mdpi.com/2077-0383/4/1/172/xml |
| article pdf uploaded. | 14 January 2015 15:14 CET | Version of Record | https://www.mdpi.com/2077-0383/4/1/172/pdf |
