| article html file updated | 6 February 2020 18:47 CET | Update | https://www.mdpi.com/2218-2004/3/2/120 |
| article html file updated | 6 May 2019 19:43 CEST | Update | N/A |
| article html file updated | 26 March 2019 02:57 CET | Update | N/A |
| article html file updated | 21 August 2015 12:21 CEST | Update | N/A |
| article html file updated | 10 July 2015 05:50 CEST | Original file | N/A |
| article xml file uploaded | 10 July 2015 05:50 CEST | Original file | https://www.mdpi.com/2218-2004/3/2/120/xml |
| article pdf uploaded. | 20 May 2015 10:04 CEST | Version of Record | https://www.mdpi.com/2218-2004/3/2/120/pdf |
