We used to live in Waterloo for 6 years. Our address was: 
Andrej Brodnik                            Andrej Brodnik
163 University Avenue West, Apt.127,      University of Waterloo,
Waterloo, Ontario,                        Faculty of Mathematics,
CANADA, N2L 3E5                           Department of Computer Science,
                                          200 University Avenue West
                                          Waterloo, Ontario,
                                          CANADA,   N2L 3G1

phone: +1 (519) 747 5466                  phone: +1 (519) 885 1211 ext.3299
                                          phone: +1 (519) 888 4567 ext.3299
fax:   +1 (519) 885 1208                  fax:   +1 (519) 885 1208
                                          telex: 069 - 55259

e-mail: ABrodnik@UWaterloo.CA