| THE KORSELT SET OF pq O ECHI, N GHANMI International Journal of Number Theory 8 (2), 299-309, 2012 | 46* | 2012 |
| The categories of flows of Set and Top O Echi Topology and its Applications 159, 2357--2366, 2012 | 33 | 2012 |
| -spaces and the Wallman compactification K Belaid, O Echi, S Lazaar International Journal of Mathematics and Mathematical Sciences 2004, 3717-3735, 2004 | 31 | 2004 |
| Topologies associées à une relation binaire et relation binaire spectrale E Bouacida, O Echi, E Salhi Bollettino della Unione Matematica Italiana-B, 417-440, 1996 | 30 | 1996 |
| Anneaux quasi-prüfériens et P-anneaux. AAPJ CAHEN, O ECHI Bollettino UM l 7 (10-B), 1-24, 1996 | 28 | 1996 |
| Pairs of domains where all intermediate domains are Jaffard MB Nasr, O Echi, L Izelgue, N Jarboui Journal of Pure and Applied Algebra 145 (1), 1-18, 2000 | 27 | 2000 |
| A-spectral spaces K Belaid, O Echi, R Gargouri Topology and its Applications 138 (1-3), 315-322, 2004 | 26 | 2004 |
| Universally catenarian and going-down pairs of rings A Ayache, M Ben Nasr, O Echi, N Jarboui Mathematische Zeitschrift 238 (4), 695-731, 2001 | 23 | 2001 |
| Feuilletages et topologie spectrale E Bouacida, O Echi, E Salhi Journal of the Mathematical Society of Japan 52 (2), 447-464, 2000 | 23 | 2000 |
| Foliations, spectral topology, and special morphisms E Bouacida, O Echi, E Salhi Lecture Notes in Pure and Applied Mathematics 205, 111-132, 1999 | 22* | 1999 |
| Williams numbers O Echi Mathematical Reports of the Academy of Sciences 29 (2), 41-47, 2007 | 18 | 2007 |
| A topological characterization of the Goldman prime spectrum of a commutative ring O Echi Communications in Algebra 28 (5), 2329-2337, 2000 | 18 | 2000 |
| On maximal non-ACCP subrings A Ayache, DE Dobbs, O Echi Journal of Algebra and its Applications 6 (05), 873-894, 2007 | 17 | 2007 |
| Korselt numbers and sets K Bouallègue, O Echi, RGE Pinch International Journal Of Number Theory 6 (02), 257-269, 2010 | 16 | 2010 |
| The envelope of a subcategory in topology and group theory A Ayache, O Echi International journal of mathematics and mathematical sciences 2005, 3387-3404, 2005 | 15 | 2005 |
| Quasi-Homeomorphisms, Goldspectral Spaces and Jaespectral Spaces O Echi Bollettino della Unione Matematica Italiana-B, 489-508, 2003 | 15 | 2003 |
| An extension theorem for sober spaces and the Goldman topology E Bouacida, O Echi, G Picavet, E Salhi International Journal of Mathematics and Mathematical Sciences 2003, 3217-3239, 2003 | 15 | 2003 |
| Sur les hauteurs valuatives O Echi Bollettino della Unione Matematica Italiana-B, 281-298, 1995 | 11 | 1995 |
| Spectral primal spaces O Echi, T Turki J. Algebra Appl 18, 1950030, 2019 | 10 | 2019 |
| Submaximal and door compactifications K Belaid, L Dridi, O Echi Topology and its Applications 158, 1969-1975, 2011 | 10 | 2011 |
Karim BelaidInstitut Préparatoire aux Etudes d’Ingénieurs El Manar, Université de Tunis El Manar, Tunisie.
