| article html file updated | 6 February 2020 18:46 CET | Update | https://www.mdpi.com/2075-4442/3/2/437 |
| article html file updated | 6 May 2019 19:45 CEST | Update | - |
| article html file updated | 26 March 2019 02:56 CET | Update | - |
| article html file updated | 21 August 2015 12:19 CEST | Update | - |
| article html file updated | 30 June 2015 03:11 CEST | Original file | - |
| article xml file uploaded | 30 June 2015 03:11 CEST | Original file | https://www.mdpi.com/2075-4442/3/2/437/xml |
| article pdf uploaded. | 20 May 2015 10:34 CEST | Updated version of record | https://www.mdpi.com/2075-4442/3/2/437/pdf |
| article pdf uploaded. | 19 May 2015 14:33 CEST | Version of Record | https://www.mdpi.com/2075-4442/3/2/437/pdf-vor |
