| article html file updated | 9 February 2020 08:21 CET | Update | https://www.mdpi.com/2227-7102/8/1/32 |
| article html file updated | 1 May 2019 14:50 CEST | Update | N/A |
| article html file updated | 17 April 2019 14:25 CEST | Update | N/A |
| article html file updated | 29 March 2019 03:16 CET | Update | N/A |
| article html file updated | 27 March 2018 15:21 CEST | Update | N/A |
| article html file updated | 2 March 2018 06:15 CET | Original file | N/A |
| article xml uploaded. | 2 March 2018 06:14 CET | Original file | https://www.mdpi.com/2227-7102/8/1/32/xml |
| article pdf uploaded. | 2 March 2018 06:14 CET | Version of Record | https://www.mdpi.com/2227-7102/8/1/32/pdf |
