Fox, Harold (May 1999). "Barbels and barbel-like tentacular structures in sub-mammalian vertebrates: a review". Hydrobiologia. 403: 153–193. doi:10.1023/A:1003778125517. S2CID45206327.
Fox, Harold (May 1999). "Barbels and barbel-like tentacular structures in sub-mammalian vertebrates: a review". Hydrobiologia. 403: 153–193. doi:10.1023/A:1003778125517. S2CID45206327.