Mennickent, R.E.: Kołaczkowski, Z.Unveiling the phenomenon of Double Periodic Variables (англ.) / G. Magris, G. Bruzual, & L. Carigi. — XII Latin American IAU Regional Meeting. — 2009. — Vol. 35. — P. 166—167. — (Revista Mexicana de Astronomia y Astrofisica Conference Series). Архивировано 8 марта 2016 года.. — «In this paper we give a brief report of our recent research on Double Periodic Variables (DPVs), including the discovery of DPVs in the Galaxy and some insights on the nature of their long-cycle variability.».
Mennickent, R.E.: Kołaczkowski, Z.Unveiling the phenomenon of Double Periodic Variables (англ.) / G. Magris, G. Bruzual, & L. Carigi. — XII Latin American IAU Regional Meeting. — 2009. — Vol. 35. — P. 166—167. — (Revista Mexicana de Astronomia y Astrofisica Conference Series). Архивировано 8 марта 2016 года.. — «In this paper we give a brief report of our recent research on Double Periodic Variables (DPVs), including the discovery of DPVs in the Galaxy and some insights on the nature of their long-cycle variability.».