Please note that Mommsen uses the AUC chronology (Ab Urbe Condita), i.e. from the founding of the City of Rome. You can use this reference table to have the B.C. dates
From: The History of Rome, by Theodor Mommsen
Translated with the sanction of the author by William Purdie Dickson
The answer was, that if Caesar would immediately return to his province, they would bind themselves to procure the disarming of Italy and the departure of Pompeius by a decree of the senate to be passed in due form in the capital; perhaps this reply was intended not as a bare artifice to deceive, but as an acceptance of the proposal of compromise; it was, however, in reality the opposite. The personal conference which Caesar desired with Pompeius the latter declined, and could not but decline, that he might not by the semblance of a new coalition with Caesar provoke still more the distrust already felt by the constitutional party.
Concerning the management of the war it was agreed in Teanum, that Pompeius should take the command of the troops stationed at Luceria, on which notwithstanding their untrustworthiness all hope depended; that he should advance with these into his own and Labienus' native country, Picenum; that he should personally call the general levy there to arms, as he had done some thirty-five years ago,(16) and should attempt at the head of the faithful Picentine cohorts and the veterans formerly under Caesar to set a limit to the advance of the enemy.
16. Cf. IV. IX. Pompeius
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Reference address : https://www.ellopos.net/elpenor/rome/5-10-brundisium-pharsalus-thapsus.asp?pg=21