G. Zamfirescu, M.A. Calin, A. Nica, N. Herascu, C. Munteanu, Studiul la nivel celular al efectelor radiatiilor laser de mica putere, Al V-lea Congres National de Medicina Fizica si Recuperare, Bucuresti, Romania, 13-16 oct. 2004.

G. Zamfirescu, M.A. Calin, N. Herascu, C. Chitonu, C. Munteanu, Efectul inhibitor al iradierii laser multiple asupra fibroblastelor umane in vitro, A XXII–a Sesiune Stiintifica Anuala a Societatii Nationale de Biologie celulara, Sighisoara, Romania, 10-13 iunie, 2004.

M.I. Gruia, M.A. Calin, T, Utilizarea terapiei fotodinamice in tratamentul alternativ al cancerelor greu operabile la animalele de companie, Coman Simpozion “Prioritati in Dezvoltarea Biotehnologiei Romanesti, Targoviste, 12 – 13 dec. 2002.

M.A. Calin, M.I.Gruia, N.Herascu, L. Dumitrache, In vivo fluorescence monitoring of endogenous protoporphyrin IX induced by 5-aminolevulinic acid for diagnosis and photodynamic therapy of malignant tumors, Conferinta Nationala de Fizica, Constanta, 21- 23 sept. 2000.

M.A. Calin, N. Herascu, M.I. Gruia, N. Nicolae, Spectral properties of 5-aminolevulinic acid (ALA) and of new photosensitizers used in photodynamic therapy (PDT), A III-a Conferinta Nationala de Aplicatii ale Laserelor in Medicina si Biologie, Bucuresti, 27 nov 1999.

M.A. Calin, M.I. Gruia, The comparative study of 5-aminolevulinic acid (ALA) absorption spectra in different aqueous solutions, TFD International Physics Congress, Turkey, 18 oct. 1999.

M. Radu, D. Ciotaru, M.A. Calin, G. Savi, M. Bota, C. Stroila, Photodynamic therapy using hematoporphyrin derivate and He-Ne laser irradiation in Erlich tumor: an experimental study on mice, ROMOPTO '97: Fifth Conference on Optics, 1998.

M.A. Calin, M. Tomescu, R. Radvan, M. Radu, T. Necsoiu, Comparative study of the thermal effects generated by laser irradiation for medical applications, , ROMOPTO '97: Fifth Conference on Optics, 1998