@article{CM_1982__46_2_145_0,
     author = {Gardner, B. J. and Stewart, Patrick N.},
     title = {The closure of radical classes under finite subdirect products},
     journal = {Compositio Mathematica},
     pages = {145--158},
     publisher = {Martinus Nijhoff Publishers},
     volume = {46},
     number = {2},
     year = {1982},
     mrnumber = {659921},
     zbl = {0485.16006},
     language = {en},
     url = {http://www.numdam.org/item/CM_1982__46_2_145_0/}
}