@article{CLTM_1975_1975_1_a20,
     author = {Karlheinz, R\"udiger},
     title = {Du\"alitat in topologischen vektorr\"aumen.},
     journal = {Collectanea mathematica},
     pages = {285-303},
     publisher = {mathdoc},
     volume = {26},
     number = {3},
     year = {1975},
     url = {http://geodesic.mathdoc.fr/item/CLTM_1975_1975_1_a20/}
}