1 "The algebraic theory of semigroups Mathematical Surveys of the American Mathematical Society" 1961
2 "The algebraic theory of semigroups Mathematical Surveys of the American Mathematical Society" 1967
3 "Some contributions to the study of ternary semigroups andsemiheaps University of Madras" 1983
4 "On the extending of models I" 38-54, 1955
5 "Ideal theory in ternary semigroups; Math" 63-84, 1965
6 "Fundamentals of Semigroup Theory" Clarendon Press, Oxford 1995
1 "The algebraic theory of semigroups Mathematical Surveys of the American Mathematical Society" 1961
2 "The algebraic theory of semigroups Mathematical Surveys of the American Mathematical Society" 1967
3 "Some contributions to the study of ternary semigroups andsemiheaps University of Madras" 1983
4 "On the extending of models I" 38-54, 1955
5 "Ideal theory in ternary semigroups; Math" 63-84, 1965
6 "Fundamentals of Semigroup Theory" Clarendon Press, Oxford 1995