@Article{npg-17-211-2010,
AUTHOR = {Mu, M. and Duan, W. and Wang, Q. and Zhang, R.},
TITLE = {An extension of conditional nonlinear optimal perturbation approach and its applications},
JOURNAL = {Nonlinear Processes  in Geophysics},
VOLUME = {17},
YEAR = {2010},
NUMBER = {2},
PAGES = {211--220},
URL = {http://www.nonlin-processes-geophys.net/17/211/2010/},
DOI = {10.5194/npg-17-211-2010}
}