| article html file updated | 6 February 2020 06:14 CET | Update | https://www.mdpi.com/2075-5309/3/4/766 |
| article html file updated | 20 September 2019 04:27 CEST | Update | - |
| article html file updated | 7 May 2019 20:47 CEST | Update | - |
| article html file updated | 21 March 2019 09:33 CET | Update | - |
| article html file updated | 19 August 2015 13:55 CEST | Original file | - |
| article pdf uploaded. | 19 December 2013 09:43 CET | Updated version of record | https://www.mdpi.com/2075-5309/3/4/766/pdf |
| article pdf uploaded. | 18 December 2013 20:06 CET | Updated version of record | https://www.mdpi.com/2075-5309/3/4/766/pdf-vor |
| article pdf uploaded. | 16 December 2013 18:19 CET | Version of Record | https://www.mdpi.com/2075-5309/3/4/766/pdf-vor |
