The determination of the Avogadro constant-not simply a metrological problem. - Peter Becker 003 (IEEE Trans. Instrum. Meas., 1999)

About the existing discrepancy in the determinations of the Avogadro constant. - Jens Martin; Horst Bettin; Ulrich Kuetgens; Detlef Schiel; Peter Becker 003 (IEEE Trans. Instrum. Meas., 1999)

A Bragg silicon lattice comparator. - Franco Alasia; Giuseppe Basile; Peter Becker 003; Ulrich Kuetgens; J. Stümpel; Marco Servidori; Jürgen Härtwig (IEEE Trans. Instrum. Meas., 2001)

The Avogadro problem: summary of tests on crystal imperfections. - Peter Becker 003; Ulrich Kuetgens; J. Stümpel (IEEE Trans. Instrum. Meas., 2001)

A reassessment of the molar volume of silicon and of the Avogadro constant. - Paul De Bievre; Staf Valkiers; Rüdiger Kessel; P. D. P. Taylor; Peter Becker 003; Horst Bettin; Anna Peuto; S. Pettorruso; Kenichi Fujii; Atsushi Waseda; Mitsuru Tanaka; R. D. Deslattes; et al. (IEEE Trans. Instrum. Meas., 2001)

Present State of the avogadro constant determination from silicon Crystals with natural isotopic compositions. - Kenichi Fujii; Atsushi Waseda; Naoki Kuramoto; Shigeki Mizushima; Peter Becker 003; Horst Bettin; R. Arnold Nicolaus; Ulrich Kuetgens; Staf Valkiers; Philip Taylor 001; Paul De Bievre; Giovanni Mana; et al. (IEEE Trans. Instrum. Meas., 2005)

Confirmation of the INRiM and PTB Determinations of the Si Lattice Parameter. - Peter Becker 003; Giovanni Cavagnero; Ulrich Kuetgens; Giovanni Mana; Enrico Massa (IEEE Trans. Instrum. Meas., 2007)

Entanglement in a solid-state spin ensemble. - Stephanie Simmons; Richard M. Brown; Helge Riemann; Nikolai V. Abrosimov; Peter Becker 003; Hans-Joachim Pohl; Mike L. W. Thewalt; Kohei M. Itoh; John J. L. Morton (Nat., 2011)