| article html file updated | 6 February 2020 23:54 CET | Update | https://www.mdpi.com/2218-1989/5/4/601 |
| article html file updated | 6 May 2019 09:04 CEST | Update | N/A |
| article html file updated | 26 March 2019 12:48 CET | Update | N/A |
| article html file updated | 28 December 2015 09:52 CET | Update | N/A |
| article xml file uploaded | 28 December 2015 09:52 CET | Update | https://www.mdpi.com/2218-1989/5/4/601/xml |
| article html file updated | 5 November 2015 11:16 CET | Original file | N/A |
| article xml file uploaded | 5 November 2015 11:16 CET | Original file | N/A |
| article pdf uploaded. | 16 October 2015 17:01 CEST | Version of Record | https://www.mdpi.com/2218-1989/5/4/601/pdf |
