| article html file updated | 7 February 2020 10:26 CET | Update | https://www.mdpi.com/2304-6740/4/2/19 |
| article html file updated | 5 May 2019 12:27 CEST | Update | - |
| article html file updated | 27 March 2019 07:57 CET | Update | - |
| article html file updated | 1 July 2016 12:03 CEST | Update | - |
| article html file updated | 20 June 2016 08:12 CEST | Original file | - |
| article xml uploaded. | 20 June 2016 08:11 CEST | Update | https://www.mdpi.com/2304-6740/4/2/19/xml |
| article pdf uploaded. | 20 June 2016 08:11 CEST | Version of Record | https://www.mdpi.com/2304-6740/4/2/19/pdf |
