@article{IM2_2002_66_1_a6,
     author = {S. Yu. Nemirovski},
     title = {Lefschetz pencils, {Morse} functions, and {Lagrangian} embeddings of the {Klein} bottle},
     journal = {Izvestiya. Mathematics },
     pages = {151--164},
     publisher = {mathdoc},
     volume = {66},
     number = {1},
     year = {2002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2002_66_1_a6/}
}