| article html file updated | 8 February 2020 08:07 CET | Update | https://www.mdpi.com/2304-6740/5/2/39 |
| article html file updated | 25 September 2019 07:30 CEST | Update | - |
| article html file updated | 3 May 2019 17:47 CEST | Update | - |
| article html file updated | 30 June 2017 08:27 CEST | Update | - |
| article html file updated | 21 June 2017 10:39 CEST | Update | - |
| article xml uploaded. | 21 June 2017 10:38 CEST | Update | https://www.mdpi.com/2304-6740/5/2/39/xml |
| article pdf uploaded. | 21 June 2017 10:37 CEST | Updated version of record | https://www.mdpi.com/2304-6740/5/2/39/pdf |
| article html file updated | 12 June 2017 13:29 CEST | Original file | - |
| article pdf uploaded. | 12 June 2017 13:28 CEST | Version of Record | https://www.mdpi.com/2304-6740/5/2/39/pdf-vor |
