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5by Iliya Zhelev, Ivanka Dimitrova-Dyulgerova, Detelina Belkinova, Rumen MladenovGet full text
Published 2013-12-01
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8by Plamen Stoyanov, Dzhemal Moten, Rumen Mladenov, Balik Dzhambazov, Ivanka TenevaGet full text
Published 2014-02-01
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9by Plamen Stoyanov, Dzhemal Moten, Rumen Mladenov, Balik Dzhambazov, Ivanka TenevaGet full text
Published 2014-01-01
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11by Plamen Stoyanov, Ivanka Dimitrova-Dyulgerova, Ivanka Teneva, Krasimir Todorov, Rumen MladenovGet full text
Published 2015-12-01
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13by Iliya Denev, Krasimir Todorov, Ina Kirilova, Rumen Mladenov, Plamen Stoyanov, Ivanka Dimitrova-DyulgerovaGet full text
Published 2018-03-01
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14by Ivanka Teneva, Detelina Belkinova, Rumen Mladenov, Plamen Stoyanov, Dzhemal Moten, Diyana Basheva, Stefan Kazakov, Balik DzhambazovGet full text
Published 2020-12-01
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