Reza Arablouei Ayaz Ghorbani A New Propagation Model for Cellular Mobile Radio Communications in Urban Environments Including Tree Effects. 580-587 2002 conf/eurasiaict/2002 EurAsia-ICT http://link.springer.de/link/service/series/0558/bibs/2510/25100580.htm db/conf/eurasiaict/eurasiaict2002.html#ArabloueiG02