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Publisher
- sociedade paranaense de matematica8
- journal of science & arts6
- universidade estadual de maringa5
- valahia university of targoviste - journal of science and arts3
- academiei romane2
- babes-bolyai university, cluj-napoca, romania2
- element d.o.o.2
- international journal of open problems in computer science & mathematics2
- springer science and business media llc2