| article html file updated | 7 February 2020 22:18 CET | Update | https://www.mdpi.com/2218-0532/85/1/4 |
| article html file updated | 23 September 2019 01:56 CEST | Update | N/A |
| article html file updated | 4 May 2019 13:28 CEST | Update | N/A |
| article html file updated | 31 March 2017 04:47 CEST | Update | N/A |
| article html file updated | 26 January 2017 11:03 CET | Original file | N/A |
| article xml uploaded. | 26 January 2017 11:02 CET | Original file | https://www.mdpi.com/2218-0532/85/1/4/xml |
| article pdf uploaded. | 26 January 2017 11:02 CET | Version of Record | https://www.mdpi.com/2218-0532/85/1/4/pdf |
