| article html file updated | 6 February 2020 21:06 CET | Update | https://www.mdpi.com/2073-431X/4/3/234 |
| article html file updated | 6 May 2019 14:53 CEST | Update | - |
| article html file updated | 26 March 2019 07:29 CET | Update | - |
| article html file updated | 14 October 2015 11:14 CEST | Update | - |
| article xml file uploaded | 14 October 2015 11:14 CEST | Original file | https://www.mdpi.com/2073-431X/4/3/234/xml |
| article html file updated | 21 August 2015 15:15 CEST | Original file | - |
| article pdf uploaded. | 27 July 2015 14:16 CEST | Version of Record | https://www.mdpi.com/2073-431X/4/3/234/pdf |
