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“The implementation of modified pillar method in the excavation field 2 (OP-2) in the ’Osojno-jug’ RL ’Lubnica’ Mine: Primena modifikovane stubne metode u otkopnom polju 2 (OP-2) u jami ’Osojno-jug’ RL ’Lubnica’”, ume, no. 27, pp. 11–21, Dec. 2015, doi: 10.5937/podrad1527011D.