@article{AUCMP_1989__30_2_a20,
     author = {P{\l}uciennik, Ryszard},
     title = {On non-solid {K\"othe} space of $\Delta_2$ type},
     journal = {Acta Universitatis Carolinae. Mathematica et Physica},
     pages = {137--142},
     publisher = {mathdoc},
     volume = {30},
     number = {2},
     year = {1989},
     mrnumber = {1046459},
     zbl = {0708.46034},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AUCMP_1989__30_2_a20/}
}