He also took classes with Daniel Mornet, Fernand Baldensperger, Paul Hazard and Mario Roques, shifting toward studies of comparative literature and working as a lecturer on the Romanian language at the Sorbonne and the École nationale des langues orientales vivantes.Popovici published his first articles of literary history in the Slatina magazine Oltul in 1928.
His proper debut as a critic took place in 1929 in Via?a Româneasca, with the study Poezia lui Cezar Bolliac.
He took part in founding (1935) and leading (1935-1936) Atheneum magazine in Ia?i.
Popovici's first published book was his doctoral thesis, the 1935 Ideologia literara a lui I.
Heliade-Radulescu; this was followed later the same year by an expanded study, "Santa Cetate".
ÃŽntre utopie ?i poezie.
During World War II, he lived in Sibiu, having withdrawn there after the Second Vienna Award granted Northern Transylvania, including Cluj, to Hungary.
While there in 1942, he founded Studii literare magazine, which ran until 1948.
He also held courses on the history of literary ideology and of modern Romanian literature, published a volume of studies (Cercetari de literatura româna) and put together critical editions of the works of Dimitrie Bolintineanu (Scrieri alese, 1942) and Ion Heliade Radulescu (Opere, vol.
He prepared a lithographed course book, Literatura româna în epoca "Luminilor" ?i Literatura româna moderna.
Tendin?a de integrare în ritmul cultural occidental.
Unedited fragments of this literary history were preserved as manuscript (Romantismul românesc) or lithographed courses (Eminescu în critica ?i istoria literara româna; Poezia lui Mihai Eminescu).
There remain in manuscript from his last years a series of literary projects and attempts: a partial translation of Dante Alighieri's Inferno; the poetry cycle Aur legendar; the opening of a novel with satirical elements, ÃŽntr-o vara, la mo?ie; and numerous comedies, of which Bucatarul de la Salamandra (1946) and Regele din Propontide (1948-1950) were completed.He married Elvira Chiffa, also a professor; the couple's daughter, Ioana Em.
Petrescu, herself became a literary historian and critic.