Cullaj, A., Hasko, A., Miho, A., Schanz, F., Brandl, H. & Bachofen, R. (2005). "The quality of Albanian natural waters and the human impact". Environment International. 31 (1): 137. doi:10.1016/j.envint.2004.06.008. PMID 15607787. [1]
researchgate.net
Cullaj, A., Hasko, A., Miho, A., Schanz, F., Brandl, H. & Bachofen, R. (2005). "The quality of Albanian natural waters and the human impact". Environment International. 31 (1): 137. doi:10.1016/j.envint.2004.06.008. PMID 15607787. [1]