| article html file updated | 7 February 2020 17:21 CET | Update | https://www.mdpi.com/2218-6581/5/4/23 |
| article html file updated | 22 September 2019 04:28 CEST | Update | - |
| article html file updated | 4 May 2019 23:46 CEST | Update | - |
| article html file updated | 30 December 2016 06:06 CET | Update | - |
| article html file updated | 1 November 2016 12:08 CET | Original file | - |
| article xml uploaded. | 1 November 2016 12:07 CET | Update | https://www.mdpi.com/2218-6581/5/4/23/xml |
| article xml uploaded. | 1 November 2016 12:07 CET | Update | - |
| article xml uploaded. | 1 November 2016 12:07 CET | Original file | - |
| article pdf uploaded. | 1 November 2016 12:07 CET | Version of Record | https://www.mdpi.com/2218-6581/5/4/23/pdf |
