| article html file updated | 6 February 2020 06:34 CET | Update | https://www.mdpi.com/2076-0752/3/1/27 |
| article html file updated | 7 May 2019 20:08 CEST | Update | N/A |
| article html file updated | 21 March 2019 10:36 CET | Update | N/A |
| article html file updated | 18 July 2017 06:22 CEST | Update | N/A |
| article html file updated | 18 July 2017 06:20 CEST | Update | N/A |
| article html file updated | 18 July 2017 06:19 CEST | Original file | N/A |
| article xml uploaded. | 18 July 2017 06:17 CEST | Update | https://www.mdpi.com/2076-0752/3/1/27/xml |
| article pdf uploaded. | 3 January 2014 17:20 CET | Version of Record | https://www.mdpi.com/2076-0752/3/1/27/pdf |
