| article html file updated | 8 February 2020 03:04 CET | Update | https://www.mdpi.com/2073-4344/7/4/107 |
| article html file updated | 24 September 2019 04:54 CEST | Update | - |
| article html file updated | 4 May 2019 03:14 CEST | Update | - |
| article html file updated | 28 April 2017 05:41 CEST | Update | - |
| article html file updated | 10 April 2017 10:21 CEST | Original file | - |
| article xml uploaded. | 10 April 2017 10:20 CEST | Original file | https://www.mdpi.com/2073-4344/7/4/107/xml |
| article pdf uploaded. | 10 April 2017 10:20 CEST | Updated version of record | https://www.mdpi.com/2073-4344/7/4/107/pdf |
| article pdf uploaded. | 7 April 2017 11:47 CEST | Version of Record | https://www.mdpi.com/2073-4344/7/4/107/pdf-vor |
