| article html file updated | 6 February 2020 09:21 CET | Update | https://www.mdpi.com/2073-4409/3/2/438 |
| article html file updated | 7 May 2019 14:20 CEST | Update | N/A |
| article html file updated | 21 March 2019 17:18 CET | Update | N/A |
| article html file updated | 20 August 2015 07:36 CEST | Update | N/A |
| article html file updated | 11 July 2014 10:25 CEST | Original file | N/A |
| article xml file uploaded | 11 July 2014 10:25 CEST | Original file | https://www.mdpi.com/2073-4409/3/2/438/xml |
| article pdf uploaded. | 21 May 2014 09:41 CEST | Updated version of record | https://www.mdpi.com/2073-4409/3/2/438/pdf |
| article pdf uploaded. | 21 May 2014 09:24 CEST | Updated version of record | https://www.mdpi.com/2073-4409/3/2/438/pdf-vor |
| article pdf uploaded. | 21 May 2014 09:21 CEST | Updated version of record | https://www.mdpi.com/2073-4409/3/2/438/pdf-vor |
| article pdf uploaded. | 20 May 2014 14:40 CEST | Version of Record | https://www.mdpi.com/2073-4409/3/2/438/pdf-vor |
