@article{10_21136_CMJ_1987_102141, author = {Chandran, V. R.}, title = {On a problem of {B.} {Zelinka,} {II}}, journal = {Czechoslovak Mathematical Journal}, pages = {125--127}, publisher = {mathdoc}, volume = {37}, number = {1}, year = {1987}, doi = {10.21136/CMJ.1987.102141}, mrnumber = {875134}, zbl = {0625.20050}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1987.102141/} }