Erich Friedman

2016

Article Title:  Non-Tles and ‘Walls’ – a Variant on the Heesch Problem

Vol Issue:  Vol XXVI , (1), 2016

Co-Author: R. Nandakumar

Page:  130

2006

Article Title:  Covering Squares With Unit Squares

Vol Issue:  Vol XV (3) 2006 

Page:  5

2004

Article Title: 30 Two-Colored Points with No Empty Monochromatic Convex Fourgons

Vol Issue:  Vol XIV (2) 2004 

Page: 53

2003

Article Title:  Partridge Numbers

Co-Author: Patrick Hamlyn

Vol Issue:  Vol XIII (1) 2003 

Page:  10

2002

Article Title: Squares Touching a Constant Number of Other Squares

Vol Issue:  Vol XII (2) 2002

 Page:  55

Article Title:  Constant Neighbor Dihedral Tilings with 15, 32 And 43 Neighbors

Vol Issue:  Vol XI (3) 2002 

Page:  74

2000

Article Title:  N-Vex Shapes

Vol Issue: Vol IX (4) 2000 

Page: 159

1999

Article Title:  Heesch Tiles with Surround Numbers 3 and 4

Vol Issue:  Vol VIII (4) 1999 

Page: 101