| article html file updated | 8 February 2020 01:25 CET | Update | https://www.mdpi.com/2220-9964/6/3/81 |
| article html file updated | 23 September 2019 19:33 CEST | Update | N/A |
| article html file updated | 4 May 2019 06:49 CEST | Update | N/A |
| article html file updated | 28 March 2017 11:10 CEST | Update | N/A |
| article html file updated | 14 March 2017 10:48 CET | Original file | N/A |
| article xml uploaded. | 14 March 2017 10:46 CET | Original file | https://www.mdpi.com/2220-9964/6/3/81/xml |
| article pdf uploaded. | 14 March 2017 10:46 CET | Version of Record | https://www.mdpi.com/2220-9964/6/3/81/pdf |
