| article html file updated | 8 February 2020 00:48 CET | Update | https://www.mdpi.com/2306-5338/4/1/18 |
| article html file updated | 23 September 2019 15:59 CEST | Update | N/A |
| article html file updated | 4 May 2019 08:11 CEST | Update | N/A |
| article html file updated | 6 March 2017 04:47 CET | Original file | N/A |
| article xml uploaded. | 6 March 2017 04:45 CET | Update | https://www.mdpi.com/2306-5338/4/1/18/xml |
| article pdf uploaded. | 6 March 2017 04:45 CET | Updated version of record | https://www.mdpi.com/2306-5338/4/1/18/pdf |
| article pdf uploaded. | 4 March 2017 11:14 CET | Version of Record | https://www.mdpi.com/2306-5338/4/1/18/pdf-vor |
