author = { Hofacker, Andreas AND Bohle, Bernhard AND Van Heek, Werner },

title = { White-spined discocacti from the Brazilian state of Bahia },

publisher = {British Cactus and Succulent Society},

isbn = {0264-3405},

isbn = {2057-0937},

year = {2002},

url = { http://slubdd.de/katalog?TN_libero_mab2 }