| article html file updated | 8 February 2020 08:03 CET | Update | https://www.mdpi.com/2073-445X/6/2/39 |
| article html file updated | 25 September 2019 07:10 CEST | Update | - |
| article html file updated | 3 May 2019 17:54 CEST | Update | - |
| article html file updated | 30 June 2017 09:21 CEST | Update | - |
| article html file updated | 12 June 2017 09:02 CEST | Original file | - |
| article xml uploaded. | 12 June 2017 09:01 CEST | Original file | https://www.mdpi.com/2073-445X/6/2/39/xml |
| article pdf uploaded. | 12 June 2017 09:01 CEST | Updated version of record | https://www.mdpi.com/2073-445X/6/2/39/pdf |
| article pdf uploaded. | 11 June 2017 12:58 CEST | Version of Record | https://www.mdpi.com/2073-445X/6/2/39/pdf-vor |
