1. The Design and Analysis of Computer Algorithms;Aho,1975
2. Toposes, Triples and Theories;Barr,1985
3. On Čech-Stone compactifications of pseudo-topological spaces;Butzmann;Math. Nachr.,1986
4. Monads can be rough;Eklund,2006
5. P. Eklund, M.A. Galán, W. Gähler, J. Medina, M. Ojeda Aciego, A. Valverde, A note on partially ordered generalized terms, Proc. of Fourth Conference of the European Society for Fuzzy Logic and Technology and Rencontres Francophones sur la Logique Floue et ses applications (Joint EUSFLAT-LFA 2005), 793-796