| article html file updated | 7 February 2020 07:45 CET | Update | https://www.mdpi.com/2073-4409/5/2/21 |
| article html file updated | 5 May 2019 17:38 CEST | Update | N/A |
| article html file updated | 27 March 2019 02:54 CET | Update | N/A |
| article html file updated | 27 October 2017 09:11 CEST | Update | N/A |
| article html file updated | 4 July 2016 12:14 CEST | Update | N/A |
| article html file updated | 25 April 2016 12:04 CEST | Original file | N/A |
| article xml uploaded. | 25 April 2016 12:03 CEST | Original file | https://www.mdpi.com/2073-4409/5/2/21/xml |
| article pdf uploaded. | 25 April 2016 12:03 CEST | Version of Record | https://www.mdpi.com/2073-4409/5/2/21/pdf |
