1. D.V. Balin et al., High Precision Measurement of Singlet pμ Capture in H2 Gas. PSI proposal R-97-05 (1996), unpublished.
2. V.A. Andreev et al., arXiv:0704.2072v1 [nucl-ex], Phys. Rev. Lett. (2007), submitted.
3. Diffusion radius of muonic hydrogen atoms in H-D gas
4. I. Alekseev et al., Experimental results of hydrogen distillation at the deuterium removal unit of the MuCap experiment. Preprint PNPI-2702, Gatchina (2006), 26p.
5. The Physical Principles of Ultra-high Vacuum. Systems and Equipment;Robinson,1968