@article{Jonsson1962, author = {Jonsson, Bjarni}, journal = {Mathematica Scandinavica}, pages = {179-205}, title = {Algebraic Extensions of Relational Systems.}, url = {http://eudml.org/doc/165827}, volume = {11}, year = {1962}, }
TY - JOUR AU - Jonsson, Bjarni TI - Algebraic Extensions of Relational Systems. JO - Mathematica Scandinavica PY - 1962 VL - 11 SP - 179 EP - 205 UR - http://eudml.org/doc/165827 ER -