@article{SF_1975__11_134130,
     author = {A. Mukherjea and W.E. CLARK},
     title = {Is {Topologically} {Simple} {Simple?}},
     journal = {Semigroup forum},
     pages = {90--93},
     publisher = {mathdoc},
     volume = {11},
     year = {1975},
     zbl = {0308.22004},
     url = {http://geodesic.mathdoc.fr/item/SF_1975__11_134130/}
}