@article{AM2_1973__9_136375,
     author = {TUDOR ZAMFIRESCU},
     title = {Fixpunkt- und {Kontraktionss\"atze} in metrischen {R\"aumen} {(Fixed} {Point} and {Contraction} {Theorems} in {Metric} {Spaces)} {(Short} {Communication)}},
     journal = {Aequationes mathematicae},
     pages = {311--312},
     publisher = {mathdoc},
     volume = {9},
     year = {1973},
     url = {http://geodesic.mathdoc.fr/item/AM2_1973__9_136375/}
}