@book{mclachlan:1934:pvd,
    author = {McLachlan, N. W.},
     title = {Loud Speakers: Theory, Performance, Testing and Design},
      note = {Reprinted, with corrections,
              by Dover Publications Inc., 1960.},
 publisher = {Oxford University Press},
   address = {New York},
      year = {1934},
   mrclass = {76.00},
  mrnumber = {MR0115510 (22 \#6311)},
     zblno = {0102.20502}}