| article html file updated | 6 February 2020 06:44 CET | Update | https://www.mdpi.com/2073-445X/3/1/52 |
| article html file updated | 7 May 2019 19:47 CEST | Update | - |
| article html file updated | 21 March 2019 11:02 CET | Update | - |
| article html file updated | 19 August 2015 17:24 CEST | Update | - |
| article html file updated | 16 January 2014 14:57 CET | Original file | - |
| article xml uploaded. | 16 January 2014 14:57 CET | Original file | https://www.mdpi.com/2073-445X/3/1/52/xml |
| article pdf uploaded. | 15 January 2014 13:44 CET | Updated version of record | https://www.mdpi.com/2073-445X/3/1/52/pdf |
| article pdf uploaded. | 15 January 2014 09:55 CET | Version of Record | https://www.mdpi.com/2073-445X/3/1/52/pdf-vor |
