A comment on “A separation method of 0ν- and 2ν-events in double β decay experiments with DCBA”

In the paper “A separation method of 0ν- and 2ν-events in double β decay experiments with DCBA” (Nucl. Instr. and Meth A 443(2000)101) the authors introduced a method of improving sensitivity to the 2β0ν decay in a double-β decay experiment. In this comment we want to discuss the method and to point out a mistake in the mentioned paper which makes this method much less effective than previously claimed.