I agree.

You could also try:

wireless.ictp.it/school_2005/ download/nec2/nec_part1.pdf
wireless.ictp.it/school_2005/ download/nec2/nec_part2.pdf
wireless.ictp.it/school_2005/ download/nec2/nec_part3.pdf
wireless.ictp.it/school_2005/ download/nec2/nec_part4.pdf

Arie.