Robert Hochberg

1996

Article Title:  Some 4-Chromatic Unit-Distance Graphs Without Small Cycles

Co-Author:  Paul O’Donnell

Vol Issue:  Vol V (4) 1996

Page:  137

1994

Article Title:  Letter to the Editor

Co-Author:  Paul O’Donnell

Vol Issue: Vol IV (1994) 

Page:  30

1993

Article Title: A Large Independent Set in the Unit Distance Graph

Co-Author:  Paul O’Donnell

Vol Issue:  Vol II (4) 1993 

Page:  83