| article html file updated | 7 February 2020 08:08 CET | Update | https://www.mdpi.com/2304-6740/4/2/12 |
| article html file updated | 5 May 2019 16:53 CEST | Update | - |
| article html file updated | 27 March 2019 03:39 CET | Update | - |
| article html file updated | 1 July 2016 11:59 CEST | Update | - |
| article html file updated | 4 May 2016 08:58 CEST | Original file | - |
| article xml uploaded. | 4 May 2016 08:56 CEST | Update | https://www.mdpi.com/2304-6740/4/2/12/xml |
| article pdf uploaded. | 4 May 2016 08:56 CEST | Version of Record | https://www.mdpi.com/2304-6740/4/2/12/pdf |
