Penio S. Penev Alexander Dimitrov John P. Miller Characterization of and compensation for the nonstationarity of spike shapes during physiological recordings. 1695-1701 2001 38-40 Neurocomputing http://dx.doi.org/10.1016/S0925-2312(01)00534-3 db/journals/ijon/ijon38.html#PenevDM01