Dissertatio gradualis sistens, meditationes nonnullas philosophicas, de libertate mentis humanae, quas suff. ampl. fac. phil. in Reg. Acad. Aboëns. praeside maxime reveredo atque amplissimo viro, dn. mag. Carolo Mesterton, log. & metaph. profess. reg. & ord. Publico examini modeste submittit Carolus Jerfvelin, Borgoa-Nylandus. Ad diem 27. Maji, MDCCLI. Loco horisque solitis. 1.1.1751