@article{SIGMA_2006_2_a7,
     author = {Sergey Shadchin},
     title = {Status {Report} on the {Instanton} {Counting}},
     journal = {Symmetry, integrability and geometry: methods and applications},
     year = {2006},
     volume = {2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SIGMA_2006_2_a7/}
}