| article html file updated | 6 February 2020 20:51 CET | Update | https://www.mdpi.com/2218-1989/5/3/431 |
| article html file updated | 6 May 2019 15:24 CEST | Update | - |
| article html file updated | 26 March 2019 06:59 CET | Update | - |
| article html file updated | 30 September 2015 08:31 CEST | Update | - |
| article xml file uploaded | 30 September 2015 08:31 CEST | Original file | https://www.mdpi.com/2218-1989/5/3/431/xml |
| article html file updated | 21 August 2015 15:04 CEST | Original file | - |
| article pdf uploaded. | 20 July 2015 13:35 CEST | Version of Record | https://www.mdpi.com/2218-1989/5/3/431/pdf |
