REFERENCES
- Auinger , K. 1992 . Free Objects in Joins of Strict Inverse and Completely Simple Semigroup Varieties . J. London Math. Soc. , 45 ( 2 ) : 491 – 507 .
- Auinger , K. , Doyle , J. and Jones , P.R. 1994 . On Existence Varieties of Locally Inverse Semigroups . Math. Proc. Cambridge Phil. Soc. , 115 : 197 – 217 .
- Clifford , A.H. and Preston , G.B. 1961 . “ Amer. Math. Soc. ” . In The Algebraic Theory of Semigroups Vol. 1 , Providence
- Hall , T.E. 1973 . On Regular Semigroups . J. Algebra , 24 : 1 – 24 .
- Howie , J.M. 1976 . An Introduction to Semigroup Theory London : Academic Press .
- Howie , J.M. and Lallement , G. 1966 . Certain Fundamental Congruences on a Regular Semigroup . Proc. Glasgow Math. Assoc. , 7 : 145 – 159 .
- Lallement , G. and Petrich , M. 1969 . Structure d'une Classe de Demi-groupes Réguliers . J. Math. Pure Appl. , 48 : 345 – 397 .
- Leech , J. 1975 . The Structure of a Band of Groups . Mem. Amer. Math. Soc. , : 157
- Nambooripad , K.S.S. 1979 . The Structure of Regular Semigroups I . Mem. Amer. Math. Soc. , : 224
- Nambooripad , K.S.S. 1980 . The Natural Partial Order on a Regular Semigroup . Proc. Edinburgh Math. Soc. , 23 : 249 – 260 .
- Pastijn , F. and Petrich , M. 1985 . Regular Semigroups as Extensions London : Pitman .
- Petrich , M. 1973 . Introduction to Semigroups Columbus : Merrill .
- Petrich , M. 1977 . “ Cahiers Math. 11 ” . In Structure of Regular Semigroups Montpellier
- Petrich , M. 1984 . New York : Inverse Semigroups Wiley .
- Petrich , M. 1987 . A Structure Theorem for Completely Regular Semigroups . Proc. Amer. Math. Soc. , 99 : 617 – 622 .
- Petrich , M. and Reilly , N.R. 1983 . Near Varieties of Idempotent Generated Completely Simple Semigroups . Algebra Universalis , 16 : 83 – 104 .
- Yamada , M. 1961 . Regular Semigroups Whose Idempotents Satisfy Permutation Identities . Pacific J. Math. , 21 : 371 – 392 .
- Yamada , M. 1973 . Note on a Certain Class of Orthodox Semigroups . Semigroup Forum , 6 : 180 – 188 .
- Yeh , Y.J. 1992 . The Existence of e-free Objects in e-varieties of Regular Semigroups . Intern. J. Algebra Comp. , 2 : 471 – 484 .