YALÇIN, M. G. 2004. Mineralogic And Physical Characterizatoin of The Oltustone, A Mystical Gemstone (Occurring Around Oltu-Erzurum-Eastern Turkey). ICAM-BR, Sao Paulo, ISBN 85-98656-02-X, p537-539, Apllied Mineralogy, Pecchio et al. (eds), Brazil, 2004 , (Sao Paulo, Brazil), 537-539.

YALÇIN, M. G., (2004). Mineralogic And Physical Characterizatoin of The Oltustone, A Mystical Gemstone (Occurring Around Oltu-Erzurum-Eastern Turkey) . ICAM-BR, Sao Paulo, ISBN 85-98656-02-X, p537-539, Apllied Mineralogy, Pecchio et al. (eds), Brazil, 2004 (pp.537-539). Sao Paulo, Brazil

YALÇIN, MUSTAFA. "Mineralogic And Physical Characterizatoin of The Oltustone, A Mystical Gemstone (Occurring Around Oltu-Erzurum-Eastern Turkey)," ICAM-BR, Sao Paulo, ISBN 85-98656-02-X, p537-539, Apllied Mineralogy, Pecchio et al. (eds), Brazil, 2004, Sao Paulo, Brazil, 2004

YALÇIN, MUSTAFA G. . "Mineralogic And Physical Characterizatoin of The Oltustone, A Mystical Gemstone (Occurring Around Oltu-Erzurum-Eastern Turkey)." ICAM-BR, Sao Paulo, ISBN 85-98656-02-X, p537-539, Apllied Mineralogy, Pecchio et al. (eds), Brazil, 2004 , Sao Paulo, Brazil, pp.537-539, 2004

YALÇIN, M. G. (2004) . "Mineralogic And Physical Characterizatoin of The Oltustone, A Mystical Gemstone (Occurring Around Oltu-Erzurum-Eastern Turkey)." ICAM-BR, Sao Paulo, ISBN 85-98656-02-X, p537-539, Apllied Mineralogy, Pecchio et al. (eds), Brazil, 2004 , Sao Paulo, Brazil, pp.537-539.

@conferencepaper{conferencepaper, author={MUSTAFA GÜRHAN YALÇIN}, title={Mineralogic And Physical Characterizatoin of The Oltustone, A Mystical Gemstone (Occurring Around Oltu-Erzurum-Eastern Turkey)}, congress name={ICAM-BR, Sao Paulo, ISBN 85-98656-02-X, p537-539, Apllied Mineralogy, Pecchio et al. (eds), Brazil, 2004}, city={Sao Paulo}, country={Brazil}, year={2004}, pages={537-539} }