@article{10_21136_CPM_1980_108241,
     author = {Webb, William A.},
     title = {Expressing rationals as a sum of a small number of unit fractions},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {345--349},
     publisher = {mathdoc},
     volume = {105},
     number = {4},
     year = {1980},
     doi = {10.21136/CPM.1980.108241},
     mrnumber = {597910},
     zbl = {0461.10006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1980.108241/}
}