A five step refactoring process : improving software design properlyPõld, Janari; Kalja, Ahto; Robal, TarmoInfo- ja kommunikatsioonitehnoloogia doktorikooli IKTDK kolmanda aastakonverentsi artiklite kogumik : 25.-26. aprill 2008, Voore külalistemaja2008 / p. 93-96 : ill

A five step refactoring process : improving software design properlyPõld, Janari; Kalja, Ahto; Robal, TarmoDatabases and information systems : proceedings of the Eighth International Baltic Conference, Baltic DBAMPIS 2008 : Tallinn, June 2-5, 20082008 / p. 37-48 : ill

Analysing the web log to determine the efficiency of web systemsRobal, Tarmo; Kalja, Ahto; Põld, JanariDatabases and information systems : Seventh International Baltic Conference on Databases and Information Systems. Communications : Vilnius, Lithuania, July 3-6, 20062006 / p. 264-275

Estonian eGovernment services : lesson learnedKalja, Ahto; Põld, Janari; Robal, Tarmo; Vallner, Uuno; Viies, VladimirProceedings of PICMET'13 : Technology Management in the IT-Driven Services : [July 28-August 1, 2013, San Jose, California, USA]2013 / p. 562-568 : ill

Modernization of the e-government in EstoniaKalja, Ahto; Põld, Janari; Robal, Tarmo; Vallner, UunoProceedings of PICMET '11 : Technology Management in the Energy Smart World (PICMET) : July 31 - August 4, 2011, Portland, Oregon USA2011 / p. 3151-3157 : ill

On proving the concept of an ontology aided software refactoring toolPõld, Janari; Robal, Tarmo; Kalja, AhtoDatabases and information systems : tenth international Baltic conference on databases and information systems : local proceedings, materials of doctoral consortium : Vilnius, Lithuania, July 8-11, 20122012 / p. 179 https://www.researchgate.net/publication/287294774_On_proving_the_concept_of_an_ontology_aided_software_refactoring_tool

On proving the concept of an ontology aided software refactoring toolPõld, Janari; Robal, Tarmo; Kalja, AhtoDatabases and information systems VII : selected papers from the tenth International Baltic Conference, DB&IS 20122013 / p. 84-94

Refactoring - key to success for constantly developed projectsPõld, Janari; Kalja, Ahto; Robal, TarmoInformation modelling and knowledge bases XXVIII2017 / p. 13-22 http://doi.org/10.3233/978-1-61499-720-7-13

Refactoring - key to success for constantly developed projects [Electronic resource]Põld, Janari; Kalja, Ahto; Robal, TarmoProceedings of the 26th International Conference on Information Modelling and Knowledge Bases - EJC 2016 : June 6-10, 2016, Tampere, Finland2016 / p. 15-24. [USB]