BACH L., Burkhardt P . and LIMPENS H.J.G.A ., 2004 – Tunnel as a possibility to connect bat habitats . Mammalia Flight . 68 (4): 411-420.
Bach L., BURKHARDT P. LIMPENS H.J.G.A., 2004 – Handaki kama uwezekano wa kuunganisha makazi bat. Mammalia Ndege. 68 (4): 411-420.