| article html file updated | 29 August 2025 21:03 CEST | Update | https://www.mdpi.com/2077-0383/3/2/491 |
| article html file updated | 15 July 2022 23:02 CEST | Update | N/A |
| article html file updated | 6 February 2020 09:08 CET | Update | N/A |
| article html file updated | 7 May 2019 14:46 CEST | Update | N/A |
| article html file updated | 21 March 2019 16:47 CET | Update | N/A |
| article html file updated | 20 August 2015 06:20 CEST | Update | N/A |
| article html file updated | 16 December 2014 04:50 CET | Update | N/A |
| article xml file uploaded | 16 December 2014 04:50 CET | Update | https://www.mdpi.com/2077-0383/3/2/491/xml |
| article html file updated | 10 December 2014 09:53 CET | Original file | N/A |
| article xml file uploaded | 10 December 2014 09:53 CET | Original file | N/A |
| article pdf uploaded. | 9 May 2014 09:55 CEST | Version of Record | https://www.mdpi.com/2077-0383/3/2/491/pdf |
