| article html file updated | 5 February 2020 15:59 CET | Update | https://www.mdpi.com/2072-6694/2/4/2001 |
| article html file updated | 9 May 2019 03:23 CEST | Update | N/A |
| article html file updated | 20 March 2019 04:17 CET | Update | N/A |
| article html file updated | 16 June 2015 12:48 CEST | Update | N/A |
| article html file updated | 22 November 2013 11:33 CET | Original file | N/A |
| article xml file uploaded | 22 November 2013 11:33 CET | Original file | https://www.mdpi.com/2072-6694/2/4/2001/xml |
