(1) However, a definitive answer to this question requires the obtention of a harmonic reference state.(2) The polymerization method allowed the obtention of transparent samples without irregularities or stresses caused by thermal shock.(3) Finally, we have already mentioned that the use of different values of ionization constants led to the obtention of different values.(4) Alphonse used to say, a thing needed cancels the pleasure of its obtention .(5) their protests serve no purpose and will only make their obtention of a diploma almost impossible