Van Es, E; Burke, S; Pearce, A K (2024) Environmental Radioactivity Proficiency Test Exercise 2023/24. NPL Report. IR 66

Braysher, E C; Russell, B; Arinc, A; Abilama, M; Shearman, R; Van Es, E; Ivanov, P; Read, D (2023) Application of inductively coupled plasma tandem mass spectrometry for re-measuring the half-life of long-lived radionuclides. In: 23rd International Conference on Radionuclide Metrology and its Applications (ICRM 2023), 26 - 31 March 2023, Bucharest, Romania.

Van Es, E; Collins, S M; Mohamud, H; Shearman, R (2021) Environmental Radioactivity Proficiency Test Exercise 2020. NPL Report. IR 59

Van Es, E; Collins, S M; Mohamud, H; Russell, B; Shearman, R (2021) Environmental radioactivity proficiency test exercise 2019 - final report. NPL Report. IR 57

Dean, J; Collins, S; Van Es, E; Keightley, L; Russell, B; Shearman, R; Woods, S (2019) Environmental Radioactivity Proficiency Test Exercise 2018 - Final Report. NPL Report. IR 56