Steinfeld, Otto <br/><br/>
Quasi-ideals in rings and semi-groups 
Otto Steinfeld 
 - Budapest  Akademia Kiado  1978 
 - 154p. 25cm 
 - Disquistiones mathematicae Hungaricae  10 .
<br/><br/>Bibliography: p.143-147 Includes index 
<br/><br/><label>ISBN: </label>9630516969 
<br/><br/><label>LCCN: </label>79-308570 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Associative rings<br/>Semigroups<br/>Ideals (Algebra)