1.   The flashing ratchet and unidirectional transport of matter. Discr. Cont. Dyn. Syst. Ser. B, V. 16, no. 3, 2011, 963 – 971 (preprints available at arXiv and here).

2.   Analytical aspects of the Brownian motor effect in randomly flashing ratchets, J. Math. Biol., 68:1677–1705 (2014), an old preprint available here, a new one in arXiv.

3.   On the bulk velocity of Brownian ratchets, with S. Kondratyev and J.M. Urbano, SIAM J. Math. Anal. 48 (2016) 950-980 (preprints available at arXiv and here).