@article{SMZ_2006__47_4_54734,
     author = {Pinus, A.G.},
     title = {On the subsemilattices of first-order definable and openly first-order definable congruences of the congruence lattice of a universal algebra.},
     journal = {Sibirskij Matematicheskij Zhurnal},
     pages = {865},
     publisher = {mathdoc},
     volume = {47},
     number = {4},
     year = {2006},
     zbl = {1150.08302},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/item/SMZ_2006__47_4_54734/}
}