| article html file updated | 6 February 2020 15:01 CET | Update | https://www.mdpi.com/2073-445X/4/1/19 |
| article html file updated | 7 May 2019 02:49 CEST | Update | - |
| article html file updated | 25 March 2019 20:12 CET | Update | - |
| article html file updated | 21 August 2015 05:25 CEST | Update | - |
| article html file updated | 20 January 2015 08:36 CET | Original file | - |
| article xml file uploaded | 20 January 2015 08:36 CET | Original file | https://www.mdpi.com/2073-445X/4/1/19/xml |
| article pdf uploaded. | 8 January 2015 12:15 CET | Version of Record | https://www.mdpi.com/2073-445X/4/1/19/pdf |
