| article html file updated | 8 February 2020 00:43 CET | Update | https://www.mdpi.com/2220-9964/6/3/70 |
| article html file updated | 23 September 2019 15:31 CEST | Update | - |
| article html file updated | 4 May 2019 08:22 CEST | Update | - |
| article html file updated | 28 March 2017 11:05 CEST | Update | - |
| article html file updated | 3 March 2017 15:36 CET | Original file | - |
| article xml uploaded. | 3 March 2017 15:35 CET | Update | https://www.mdpi.com/2220-9964/6/3/70/xml |
| article pdf uploaded. | 3 March 2017 15:35 CET | Version of Record | https://www.mdpi.com/2220-9964/6/3/70/pdf |
