author = { Kichenside, Geoffrey Michael AND Williams, Alan },

title = { British railway signalling },

edition = { 4. ed. } ,

publisher = {Ian Allan Ltd.},

isbn = {0711008981},

isbn = {9780711008984},

year = {1980},

address = { London },

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