@article{PS_2011__15__S25_0,
     author = {F\"ollmer, Hans and Protter, Philip},
     title = {Local martingales and filtration shrinkage},
     journal = {ESAIM: Probability and Statistics},
     pages = {S25--S38},
     publisher = {EDP-Sciences},
     volume = {15},
     year = {2011},
     doi = {10.1051/ps/2010023},
     mrnumber = {2817343},
     language = {en},
     url = {http://www.numdam.org/articles/10.1051/ps/2010023/}
}