@article{GFA_1993__3_6_58119,
     author = {S.K. Donaldson},
     title = {The {Approximation} of {Instantons.}},
     journal = {Geometric and functional analysis},
     pages = {179--200},
     publisher = {mathdoc},
     volume = {3},
     number = {6},
     year = {1993},
     zbl = {0778.57010},
     url = {http://geodesic.mathdoc.fr/item/GFA_1993__3_6_58119/}
}