| article html file updated | 6 February 2020 18:32 CET | Update | https://www.mdpi.com/2075-1729/5/2/1381 |
| article html file updated | 6 May 2019 20:15 CEST | Update | - |
| article html file updated | 26 March 2019 02:24 CET | Update | - |
| article html file updated | 21 August 2015 11:58 CEST | Update | - |
| article html file updated | 9 July 2015 12:03 CEST | Original file | - |
| article xml file uploaded | 9 July 2015 12:03 CEST | Original file | https://www.mdpi.com/2075-1729/5/2/1381/xml |
| article pdf uploaded. | 12 May 2015 14:04 CEST | Version of Record | https://www.mdpi.com/2075-1729/5/2/1381/pdf |
