| article html file updated | 12 August 2026 19:08 CEST | Update | https://www.mdpi.com/1996-1073/6/5/2338 |
| article html file updated | 6 February 2020 01:49 CET | Update | N/A |
| article html file updated | 8 May 2019 05:42 CEST | Update | N/A |
| article html file updated | 20 March 2019 21:50 CET | Update | N/A |
| article html file updated | 15 February 2017 07:18 CET | Original file | N/A |
| article pdf uploaded. | 8 May 2013 13:55 CEST | Updated version of record | https://www.mdpi.com/1996-1073/6/5/2338/pdf |
| article pdf uploaded. | 29 April 2013 12:06 CEST | Version of Record | https://www.mdpi.com/1996-1073/6/5/2338/pdf-vor |
