@article{SEDP_1996-1997____A20_0,
     author = {Doi, Shin-ichi},
     title = {Smoothing effect for {Schr\"odinger} evolution equation via commutator algebra},
     journal = {S\'eminaire Goulaouic-Schwartz},
     note = {talk:20},
     pages = {1--13},
     year = {1996-1997},
     publisher = {Centre de math\'ematiques Laurent Schwartz, \'Ecole polytechnique},
     zbl = {1054.58012},
     mrnumber = {1482826},
     language = {en},
     url = {https://www.numdam.org/item/SEDP_1996-1997____A20_0/}
}