Mr Petr Křen
https://orcid.org/0000-0002-6169-6692
Consultative Committee for Length
Experts
From 14 to 15 June 2018
Consultative Committee for Length
Delegates
From 23 to 24 September 2015
Consultative Committee for Length
Delegates
From 19 to 20 September 2012
CCU-CCQM Workshop
Participant
From 28 to 30 March 2023
CCL Working Group on the CIPM MRA
Participant
From 08 to 10 November 2022
CCL Working Group on Dimensional Nanometrology
Delegates
08 October 2021