| article html file updated | 8 February 2020 00:29 CET | Update | https://www.mdpi.com/2220-9964/6/3/67 |
| article html file updated | 23 September 2019 14:09 CEST | Update | N/A |
| article html file updated | 4 May 2019 08:56 CEST | Update | N/A |
| article html file updated | 28 March 2017 11:03 CEST | Update | N/A |
| article html file updated | 28 February 2017 15:12 CET | Original file | N/A |
| article xml uploaded. | 28 February 2017 15:10 CET | Update | https://www.mdpi.com/2220-9964/6/3/67/xml |
| article xml uploaded. | 28 February 2017 15:10 CET | Original file | N/A |
| article pdf uploaded. | 28 February 2017 15:10 CET | Version of Record | https://www.mdpi.com/2220-9964/6/3/67/pdf |
