Gerhard Ringel has written:
'Map color theorem' -- subject(s): Map-coloring problem
'Topics in Combinatorics and Graph Theory'
Gerhard Ringel died in 2008.
Gerhard Ringel was born in 1919.
Gerhard Schornhorst has written: 'Gerhard Scharnhorst'
Gerhard Murza has written: 'Rostock'
Gerhard Linn has written: 'Okumene'
Gerhard Rebmann has written: 'Bekleidungsworterbuch'
Gerhard Swoboda has written: 'Metamorphosen'
Gerhard Baer has written: 'Peru'
Gerhard Roos has written: 'Eliten'
Gerhard Dengler has written: 'Die \\'
Gerhard Moltsen has written: 'Alexandra'
Gerhard Kowalewski has written: 'Integralreichungen'