| article html file updated | 8 February 2020 00:51 CET | Update | https://www.mdpi.com/2220-9964/6/3/73 |
| article html file updated | 23 September 2019 16:20 CEST | Update | N/A |
| article html file updated | 4 May 2019 08:03 CEST | Update | N/A |
| article html file updated | 28 March 2017 11:07 CEST | Update | N/A |
| article html file updated | 7 March 2017 12:20 CET | Original file | N/A |
| article xml uploaded. | 7 March 2017 12:19 CET | Original file | https://www.mdpi.com/2220-9964/6/3/73/xml |
| article pdf uploaded. | 7 March 2017 12:19 CET | Updated version of record | https://www.mdpi.com/2220-9964/6/3/73/pdf |
| article pdf uploaded. | 6 March 2017 10:11 CET | Version of Record | https://www.mdpi.com/2220-9964/6/3/73/pdf-vor |
