| article html file updated | 8 February 2020 02:24 CET | Update | https://www.mdpi.com/2076-0825/6/2/13 |
| article html file updated | 24 September 2019 01:05 CEST | Update | N/A |
| article html file updated | 4 May 2019 04:42 CEST | Update | N/A |
| article html file updated | 28 June 2017 12:14 CEST | Update | N/A |
| article html file updated | 28 March 2017 12:05 CEST | Original file | N/A |
| article xml uploaded. | 28 March 2017 11:39 CEST | Original file | https://www.mdpi.com/2076-0825/6/2/13/xml |
| article pdf uploaded. | 28 March 2017 11:39 CEST | Version of Record | https://www.mdpi.com/2076-0825/6/2/13/pdf |
