| article html file updated | 6 February 2020 20:39 CET | Update | https://www.mdpi.com/2304-8158/4/3/271 |
| article html file updated | 21 September 2019 00:12 CEST | Update | - |
| article html file updated | 6 May 2019 15:48 CEST | Update | - |
| article html file updated | 26 March 2019 06:35 CET | Update | - |
| article html file updated | 14 October 2015 09:49 CEST | Update | - |
| article xml file uploaded | 14 October 2015 09:49 CEST | Original file | https://www.mdpi.com/2304-8158/4/3/271/xml |
| article html file updated | 21 August 2015 14:49 CEST | Original file | - |
| article pdf uploaded. | 14 July 2015 14:36 CEST | Version of Record | https://www.mdpi.com/2304-8158/4/3/271/pdf |
