Nordhaus–Gaddum type results for connected and total dominationRana Khoeilar, Hossein Karami, Mustapha Chellali, Seyed Mahmoud Sheikholeslami and Lutz VolkmannRAIRO-Oper. Res., 55 (2021) S853-S862DOI: https://doi.org/10.1051/ro/2020025