@article{ASCFM_1976__60_13_129_0,
     author = {Rubin, Matatyahu},
     title = {The theory of boolean algebras with a distinguished subalgebra is undecidable},
     journal = {Annales scientifiques de l'Universit\'e de Clermont. Math\'ematiques},
     pages = {129--134},
     publisher = {UER de Sciences exactes et naturelles de l'Universit\'e de Clermont},
     volume = {60},
     number = {13},
     year = {1976},
     mrnumber = {465835},
     zbl = {0354.02036},
     language = {en},
     url = {http://archive.numdam.org/item/ASCFM_1976__60_13_129_0/}
}