The phrase "and further asserted" is correct and usable in written English.
It can be used to indicate that someone has made an additional claim or statement after a previous assertion.
Example: "The witness provided her initial testimony and further asserted that she had seen the defendant at the scene of the crime."
Alternatives: "and additionally claimed" or "and also stated".
In 1995, again facing declining congregations, Pope John Paul II re-upped the Church's hostility toward contraception, and further asserted that condoms were verboten – at the very moment HIV and Aids were ravaging nations around the world.
Michaels doesn't believe that it is and further asserted that he would oppose any efforts to prevent the information from becoming public.
On the one hand, many teachers who do not consider themselves to be well-skilled in using ICTs reported that they would feel anxious due to their fear of failure and further asserted that 'losing face' in front of a class of teenagers who perhaps know more ICT knowledge than they do could be culturally embarrassing.
A lawsuit filed by a probation officer, Carol Nardo, accuses officers involved in Operation Nightwatch of racial profiling and violations of search and seizure restrictions, and further asserts sex discrimination in the distribution of overtime for Nightwatch patrols.
This blurring troubles existing assumptions within dominant modes of clinical research governance that identify and further assert the clear separation of research and care.
Ba Cụt, a leader of an anti-government Hòa Hảo religious sect, distributed a pamphlet condemning Diệm as an American puppet, citing the funding as proof and further asserting that Diệm was going to "Catholicize" the country.
After throwing a variety of childish temper tantrums, running afoul of the law, and exposing his shocking lack of basketball and graffiti skills, Justin Bieber's found a way to top it all and further assert himself as perhaps our most embarrassing celebrity with not one but two videos surfacing online that contain Bieber's gratuitous use of the word "nigger".
Pawson and Tilley further asserted that, an action is causal only if its outcome is triggered by mechanisms acting in context.
If it is asserted that a society functions adequately only if necessary needs are satisfied, and if it is further asserted that ritual does satisfy that need, then scholars cannot conclude that, therefore, ritual is present in that society without committing the logical fallacy of affirming the consequent.
The paper further asserted that Qatar and Russia had discussed joint gas projects two days after Mr. Bin Hammam had visited Moscow to talk about cooperation in sports.
He further asserted that its tarsal scutellation and relative lack of flattening of anterior toes was intermediate between those of glareolids and "charadriines".
