Discussiones Mathematicae - General Algebra and Applications
Discussiones Mathematicae - General Algebra and Applications > 2007 > 27 > 1 > 59-67
Discussiones Mathematicae - General Algebra and Applications > 2007 > 27 > 1 > 49-58
Discussiones Mathematicae - General Algebra and Applications > 2007 > 27 > 1 > 69-85
Discussiones Mathematicae - General Algebra and Applications > 2007 > 27 > 1 > 123-139
Discussiones Mathematicae - General Algebra and Applications > 2007 > 27 > 1 > 87-107
Discussiones Mathematicae - General Algebra and Applications > 2007 > 27 > 1 > 109-121
Discussiones Mathematicae - General Algebra and Applications > 2007 > 27 > 1 > 35-47
Discussiones Mathematicae - General Algebra and Applications > 2007 > 27 > 1 > 11-19