@article{10_1017_S0017089507003515,
     author = {FARACI, FRANCESCA and KRIST\'ALY, ALEXANDRU},
     title = {ON {AN} {OPEN} {QUESTION} {OF} {RICCERI} {CONCERNING} {A} {NEUMANN} {PROBLEM}},
     journal = {Glasgow mathematical journal},
     pages = {189--195},
     year = {2007},
     volume = {49},
     number = {2},
     doi = {10.1017/S0017089507003515},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089507003515/}
}