Author: Lal, Harbans
- 
Lal, Harbans:
		Commutative semi-primary semigroups.
		
			(English).
Czechoslovak Mathematical Journal,
		vol. 25
			(1975),
			issue 1,
		pp. 1-3
 
- 
Lal, Harbans:
		Radicals in Quasi-Commutative Semigroups.
		
			(English).
Matematický časopis,
		vol. 25
			(1975),
			issue 3,
		pp. 287-288
 
- 
Lal, Harbans:
		The Regular Ideal in a Semigroup.
		
			(English).
Matematický časopis,
		vol. 25
			(1975),
			issue 2,
		pp. 179-183
 
 
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