1997
1995ACM Far East Regional
1995 amc 12/ahsme - Art of Problem Solving
1995
1994
1994
1992
1992
1991
19889_pea300_number-system
1988 VIN Code Identification
1988 Cherokee FSM-engine vin id
1987 - math.miami.edu
1986
19848_ques-pea300_number-system-tut
19848_pea-300_problems-on-ages-and-numbers
1984
1983
1979 amc 12/ahsme - Art of Problem Solving
1978: some properties of t confidence intervals for survey data
1977 .27 - (76.38) Problems and results on combinatorial number