| article html file updated | 6 February 2020 06:13 CET | Update | https://www.mdpi.com/2072-6694/5/4/1739 |
| article html file updated | 20 September 2019 04:23 CEST | Update | N/A |
| article html file updated | 7 May 2019 20:50 CEST | Update | N/A |
| article html file updated | 21 March 2019 09:28 CET | Update | N/A |
| article html file updated | 19 August 2015 13:40 CEST | Update | N/A |
| article html file updated | 6 January 2014 11:08 CET | Original file | N/A |
| article xml file uploaded | 6 January 2014 11:08 CET | Original file | https://www.mdpi.com/2072-6694/5/4/1739/xml |
| article pdf uploaded. | 13 December 2013 18:06 CET | Version of Record | https://www.mdpi.com/2072-6694/5/4/1739/pdf |
