@article{MAN_1973__203_162425,
     author = {S. Simons},
     title = {If {E'} has the {Metric} {Approximation} {Property} then so {Does} {(E,} {E').}},
     journal = {Mathematische Annalen},
     pages = {9--10},
     publisher = {mathdoc},
     volume = {203},
     year = {1973},
     zbl = {0238.46013},
     url = {http://geodesic.mathdoc.fr/item/MAN_1973__203_162425/}
}