221
by Hecke, Erich
Published 1981
Springer New York

222
by Bump, Daniel
Published 2004
Springer New York

223
by Burger, Edward B., Tubbs, Robert
Published 2004
Springer New York

224
by Milne, Stephen C.
Published 2002
Springer US

225
by Goldstein, Catherine
Published 1987
Birkhäuser Boston

226
by David, Sinnou
Published 1992
Birkhäuser Boston

227
by Ribenboim, Paulo
Published 1991
Springer New York

228
by Zhang, Fuzhen
Published 1999
Springer New York

229
by Davenport, Harold
Published 1980
Springer New York

230
Published 2003
Springer US

231
by Rosen, Michael
Published 2002
Springer New York

232
by Fuks, D. B.
Published 1986
Springer US

233
by Ferraro, John R., Ziomek, Joseph S.
Published 1975
Springer US

234
by Guy, Richard K.
Published 1981
Springer New York

235
by Ireland, Kenneth, Rosen, Michael
Published 1982
Springer New York

236
by Ireland, Kenneth, Rosen, Michael
Published 1990
Springer New York

237
by Roman, Steven
Published 1992
Springer New York

238
by Oda, Takayuki
Published 1982
Birkhäuser Boston

239
by Crandall, Richard, Pomerance, Carl
Published 2001
Springer New York

240
by Brown, Kenneth S.
Published 1982
Springer New York