@online{
   timsrc,
   author = "Marsh, Tom",
   title = "17th European White Dwarf Workshop: SDSS1257+5428 - an extreme mass-ratio double white dwarf",
   publisher = "Universität Tübingen",
   year = "2010",
   month = "Aug",
   day = "19",
   url = "https://timms.uni-tuebingen.de:443/tp/UT_20100819_010_eurowd_0001",
   urldate = "2024-04-26"
}