@article{10_4064_cm_33_1_139_143,
     author = {Thomas E. Cecil},
     title = {On the completeness of flat surfaces in $S^3$},
     journal = {Colloquium Mathematicum},
     pages = {139--143},
     publisher = {mathdoc},
     volume = {33},
     number = {1},
     year = {1975},
     doi = {10.4064/cm-33-1-139-143},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-33-1-139-143/}
}