@article{BUMI_2006_8_9B_3_a5,
     author = {Lomonaco, Luciano A.},
     title = {On {Singer's} algebra and coalgebra structures},
     journal = {Bollettino della Unione matematica italiana},
     pages = {611--617},
     publisher = {mathdoc},
     volume = {Ser. 8, 9B},
     number = {3},
     year = {2006},
     zbl = {1177.55010},
     mrnumber = {2274115},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/BUMI_2006_8_9B_3_a5/}
}