| article html file updated | 7 February 2020 23:29 CET | Update | https://www.mdpi.com/2073-4352/7/2/56 |
| article html file updated | 23 September 2019 08:27 CEST | Update | N/A |
| article html file updated | 4 May 2019 11:04 CEST | Update | N/A |
| article html file updated | 2 March 2017 03:49 CET | Update | N/A |
| article html file updated | 16 February 2017 13:06 CET | Original file | N/A |
| article xml uploaded. | 16 February 2017 13:04 CET | Update | https://www.mdpi.com/2073-4352/7/2/56/xml |
| article xml uploaded. | 16 February 2017 13:04 CET | Original file | N/A |
| article pdf uploaded. | 16 February 2017 13:04 CET | Updated version of record | https://www.mdpi.com/2073-4352/7/2/56/pdf |
| article pdf uploaded. | 15 February 2017 12:20 CET | Version of Record | https://www.mdpi.com/2073-4352/7/2/56/pdf-vor |
