| article html file updated | 7 February 2020 05:28 CET | Update | https://www.mdpi.com/1996-1073/9/3/164 |
| article html file updated | 5 May 2019 22:23 CEST | Update | N/A |
| article html file updated | 26 March 2019 22:37 CET | Update | N/A |
| article html file updated | 30 March 2016 12:14 CEST | Original file | N/A |
| article pdf uploaded. | 9 March 2016 08:58 CET | Updated version of record | https://www.mdpi.com/1996-1073/9/3/164/pdf |
| article xml uploaded. | 9 March 2016 08:58 CET | Update | https://www.mdpi.com/1996-1073/9/3/164/xml |
| article pdf uploaded. | 4 March 2016 11:26 CET | Version of Record | https://www.mdpi.com/1996-1073/9/3/164/pdf-vor |
