| article html file updated | 8 February 2020 03:45 CET | Update | https://www.mdpi.com/2304-6732/4/2/31 |
| article html file updated | 24 September 2019 08:45 CEST | Update | N/A |
| article html file updated | 4 May 2019 01:53 CEST | Update | N/A |
| article html file updated | 29 June 2017 12:54 CEST | Update | N/A |
| article html file updated | 17 April 2017 17:22 CEST | Original file | N/A |
| article xml uploaded. | 17 April 2017 17:21 CEST | Update | https://www.mdpi.com/2304-6732/4/2/31/xml |
| article pdf uploaded. | 17 April 2017 17:21 CEST | Updated version of record | https://www.mdpi.com/2304-6732/4/2/31/pdf |
