4 http://hdl.handle.net/10338.dmlcz/127319 4 On half lattice ordered groups http://hdl.handle.net/10338.dmlcz/127331 On half lattice ordered groups Thu, 24 Sep 2009 10:01:38 GMT Ideals and congruence kernels of algebras http://hdl.handle.net/10338.dmlcz/127330 Ideals and congruence kernels of algebras Thu, 24 Sep 2009 10:01:30 GMT Principal convergences on lattice ordered groups http://hdl.handle.net/10338.dmlcz/127329 Principal convergences on lattice ordered groups Thu, 24 Sep 2009 10:01:22 GMT Finite monogenic distributive systems http://hdl.handle.net/10338.dmlcz/127328 Finite monogenic distributive systems Thu, 24 Sep 2009 10:01:14 GMT