| article html file updated | 6 February 2020 07:16 CET | Update | https://www.mdpi.com/2078-1547/5/1/75 |
| article html file updated | 7 May 2019 18:37 CEST | Update | - |
| article html file updated | 21 March 2019 12:22 CET | Update | - |
| article html file updated | 19 August 2015 20:28 CEST | Update | - |
| article html file updated | 24 June 2014 12:04 CEST | Original file | - |
| article xml file uploaded | 24 June 2014 12:04 CEST | Original file | https://www.mdpi.com/2078-1547/5/1/75/xml |
| article pdf uploaded. | 20 March 2014 09:50 CET | Updated version of record | https://www.mdpi.com/2078-1547/5/1/75/pdf |
| article pdf uploaded. | 18 February 2014 11:41 CET | Updated version of record | https://www.mdpi.com/2078-1547/5/1/75/pdf-vor |
| article pdf uploaded. | 17 February 2014 09:21 CET | Version of Record | https://www.mdpi.com/2078-1547/5/1/75/pdf-vor |
